Creamy Pesto Chicken Pasta Bake

Why You’ll Love This Creamy Pesto Chicken Pasta Bake

This Creamy Pesto Chicken Pasta Bake is one of those weeknight heroes that feels special without a long ingredient list or tricky steps. The rich pesto-milk sauce wraps around rigatoni, juicy chicken tenderloins, sun-dried tomatoes, broccoli, and spinach for a dish that’s satisfying and full of bright flavor. It’s family-friendly, easy to scale, and ready in about 50 minutes perfect for busy cooks who want a comforting meal with a fresh twist.

• Ease of preparation: Minimal prep, straightforward stovetop-to-broiler method, and only about 50 minutes from start to finish great for busy weeknights or last-minute guests.
• Health benefits: Lean chicken tenderloins provide protein; broccoli and spinach add fiber and vitamins; pesto and sun-dried tomatoes offer antioxidants from basil and tomatoes.
• Versatility: This creamy pesto pasta bake adapts to different diets and pantry items swap proteins, go gluten-free, or make it vegetarian without losing flavor.
• Distinctive flavor: The combination of pesto, sun-dried tomatoes, garlic, and a touch of Cajun seasoning gives the dish a balanced savory, herb-forward profile with a gentle kick.

Quick tip: Grating your own cheeses and salting the pasta water are small steps that make a big difference in flavor and texture.

Essential Ingredients for Creamy Pesto Chicken Pasta Bake

Below is a clear, structured list of every ingredient for this recipe with exact measurements and a short note on why each one matters.

• 10 oz rigatoni (about three-quarters of a 1lb box) – thick tube pasta that holds creamy pesto sauce well
• 1.5 lbs chicken tenderloins, diced – lean, quick-cooking protein that stays tender
• 1.5 tablespoons Italian seasoning – aromatic herb blend for savory depth
• 1/3 cup prepared pesto (store-bought or homemade) – the herbaceous backbone of the sauce
• 1.5 cups shredded mozzarella (preferably freshly shredded from the block) – melts beautifully for a golden topping
• 1 cup shredded or grated Parmesan cheese (freshly from the block recommended) – adds umami and sharpness
• 2 tablespoons butter (unsalted preferred) – builds the base of the creamy sauce
• 1 medium yellow onion, diced (red onion or shallots can be substituted) – sweetness and structure in the sauce
• 4 garlic cloves, minced finely – aromatic flavor boost
• 2 teaspoons Cajun seasoning (homemade or store-bought) – smoky-spicy note that complements pesto
• 1 teaspoon red pepper flakes (optional) – extra heat if you like it spicy
• 3 cups whole milk (can substitute half and half or heavy cream for a richer sauce) – creates the creamy texture
• 8 oz sun-dried tomatoes, packed in oil and drained – concentrated tomato sweetness and tang
• 1.5 cups broccoli florets, cut into bite-sized pieces – adds color, crunch, and nutrients
• 2 cups fresh baby spinach – wilts into the sauce for extra greens
• Olive oil – for searing the chicken and preventing sticking
• Salt and freshly ground black pepper – to season to taste

Special Dietary Options

• Vegan: Use plant-based chicken alternatives (such as seared tofu cubes or a store-bought chicken-style product), replace milk with unsweetened oat or soy creamer, and swap mozzarella and Parmesan for vegan cheeses.
• Gluten-free: Use certified gluten-free rigatoni or another short gluten-free pasta.
• Low-calorie: Use skim or 1% milk and reduce the cheese by two-thirds; add extra veggies like zucchini and bell pepper to bulk the dish.

How to Prepare the Perfect Creamy Pesto Chicken Pasta Bake: Step-by-Step Guide

First Step: Mise en place and seasoning the chicken

Gather all ingredients and dice the chicken tenderloins into bite-sized pieces. Toss the diced chicken with 1 tablespoon olive oil, 1.5 tablespoons Italian seasoning, 1 teaspoon salt, and freshly ground black pepper so each piece is evenly coated. Preheat a large pot of salted water for the rigatoni. Having everything ready makes the cooking sequence smooth and prevents overcooking.

Second Step: Cook the chicken

Heat an oven-safe skillet over medium heat and add 2 tablespoons olive oil. Add the seasoned chicken in a single layer and cook about 4 to 5 minutes per side, until the outside is golden and the internal temperature reaches 165°F. Remove the chicken to a plate and set aside. Leaving the fond those browned bits in the skillet adds flavor to the sauce.

Third Step: Build the creamy sauce

Reduce the skillet heat to medium-low and melt 2 tablespoons unsalted butter. Add the diced yellow onion and sauté until translucent, about 2 to 3 minutes. Add the minced garlic and cook until fragrant, about 30 seconds to 1 minute. Pour in 3 cups whole milk, then stir in 2 teaspoons Cajun seasoning, 1 teaspoon red pepper flakes if using, and salt and pepper to taste. Add the drained 8 oz sun-dried tomatoes and 1.5 cups broccoli florets. Bring the mixture to a low simmer and cook until the broccoli softens, about 5 minutes. Keep the heat gentle to avoid curdling.

Fourth Step: Cook the pasta al dente

While the sauce simmers, cook 10 oz rigatoni in the boiling salted water until al dente (about 1 to 2 minutes less than package directions). Reserve a cup of pasta water before draining. Drain the pasta and toss briefly with a teaspoon of olive oil to prevent sticking while you finish the sauce.

Fifth Step: Finish the sauce and assemble

Stir 2 cups fresh baby spinach into the warm sauce until wilted. Fold the cooked rigatoni and the seared chicken back into the skillet. Add 1/3 cup prepared pesto and stir gently so the sauce coats everything evenly. If the sauce seems too thick, add a splash of reserved pasta water to loosen it.

Final Step: Top with cheese and broil

Preheat your oven broiler. Sprinkle 1.5 cups shredded mozzarella and 1 cup shredded or grated Parmesan evenly over the pasta in the skillet. Place the skillet under the broiler for 3 to 5 minutes, watching closely, until the cheese melts and begins to brown. Let the bake rest for a few minutes before serving so the sauce sets slightly and slices hold together.

Watch the broiler closely: the cheese can go from golden to burnt in a single minute.

Protein and Main Component Alternatives

Not everyone will have chicken tenderloins on hand or may prefer a different protein. Below are practical swaps and how they change cooking time and flavor.

Protein substitutions

• Boneless, skinless chicken thighs: Use 1.5 to 2 pounds, diced. Thighs stay juicier and tolerate longer cooking; sear 4 to 5 minutes per side. They add more richness and stand up well to the bold pesto and sun-dried tomatoes.
• Turkey tenderloins: Similar texture to chicken; cook the same way but check internal temperature carefully.
• Seafood: Large shrimp or scallops can be quick alternatives sear 1 to 2 minutes per side and fold in at the end to avoid overcooking.
• Plant-based proteins: Use 12 to 16 ounces of a chicken-style plant protein or firm tofu cubes. Sear until browned and add to the sauce as directed.

Pasta alternatives

• Penne, fusilli, or rotini: These short shapes work almost interchangeably with rigatoni, catching sauce in their grooves and pockets.
• Gluten-free pasta: Use a high-quality corn-rice or lentil-based short pasta and cook to al dente per package instructions.
• Whole wheat pasta: Adds fiber and a nuttier flavor; it may need an extra minute or two of boiling.

Vegetable, Sauce, and Seasoning Modifications

Whether you want more vegetables, different flavor notes, or a lighter sauce, here are modifications that keep the spirit of creamy pesto chicken pasta bake while matching your pantry and preferences.

Vegetable swaps and additions

• Zucchini or yellow squash: Slice into half-moons and sauté with the onion until just tender; they add gentle sweetness and bulk.
• Bell peppers: Red or orange bell peppers bring sweetness and color; add with the onion so they soften.
• Mushrooms: Cremini or baby bella add an earthy depth sauté until golden before building the sauce.
• Frozen peas: Stir in at the end to warm through for a pop of color and sweetness.

Sauce and seasoning swaps

• Richer sauce: Replace part or all of the milk with half-and-half or heavy cream for a silkier finish.
• Lighter sauce: Use low-fat milk or a mix of milk and chicken broth, and reduce the cheese slightly.
• Herb twists: Add fresh basil ribbons after broiling for brightness, or stir in chopped parsley for a fresh finish.
• Spice changes: Swap the Cajun seasoning for a smoked paprika and garlic mixture for a milder, smoky flavor. Use lemon zest for a citrus lift.

Mastering Creamy Pesto Chicken Pasta Bake: Advanced Tips and Variations

This section collects tricks and creative spins for cooks who want to push the recipe a bit further or prepare it for different occasions.

Pro cooking techniques

• Use fond for flavor: Don’t wipe the skillet clean after searing the chicken. Deglazing the pan with a splash of milk or broth extracts caramelized flavor into the sauce.
• Temper dairy: When adding milk to a hot pan, pour slowly while stirring to avoid curdling. Keep the heat medium-low and avoid rapid boiling.
• Grate cheese fresh: Pre-shredded cheeses contain anti-caking agents that prevent smooth melting. Freshly shredded mozzarella and Parmesan create a creamier, glossier top.

Flavor variations

• Sun-dried tomato pesto twist: Mix a spoonful of finely chopped sun-dried tomatoes into the pesto for a tangy, tomato-finished sauce.
• Spicy version: Increase red pepper flakes and add a dash of hot sauce or harissa to the sauce for more heat.
• Cheesy bake: Stir 1/2 cup ricotta through the pasta before topping for creaminess and lighter texture.

Presentation tips

• Serve hot from the skillet or portion onto warmed plates. Garnish with freshly grated Parmesan, a drizzle of olive oil, and torn basil leaves for color.
• Pair with a crisp green salad or garlic bread to round out the meal.

Make-ahead options

• Prep ahead: Cook and cool the pasta and chicken separately, then refrigerate up to 24 hours. Reheat the sauce gently and combine before broiling.
• Freezer-friendly: Assemble the bake in a freezer-safe dish without broiling the cheese. Freeze for up to 3 months; when ready, thaw overnight and bake covered at 350°F until hot, then add cheese and broil briefly.

How to Store Creamy Pesto Chicken Pasta Bake: Best Practices

Proper storage keeps leftovers tasty and safe. Follow these simple guidelines for refrigeration, freezing, and reheating.

Refrigeration

Cool the pasta completely before sealing in airtight containers. Store in the refrigerator for up to 4 days. Portion into meal-sized containers for easy lunches or dinners.

Freezing

For long-term storage, freeze in airtight containers or heavy-duty freezer bags for up to 3 months. If freezing a whole skillet, cover tightly with plastic wrap and foil to prevent freezer burn. Thaw overnight in the refrigerator before reheating for best texture.

Reheating

Reheat in the oven for best results: place in an oven-safe dish, cover with foil, and bake at 325°F for 15 to 20 minutes until heated through and internal temperature reaches 165°F. For quick reheating, use a microwave in 1 to 2 minute intervals, stirring between bursts and adding a splash of milk if the sauce has thickened.

Meal prep considerations

This bake yields 6 to 8 servings and stores well, making it excellent for weekly meal prep. Keep cheese separate when freezing to avoid a rubbery top; add fresh cheese before broiling when ready to serve.

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FAQs: Frequently Asked Questions About Creamy Pesto Chicken Pasta Bake

Creamy Pesto Chicken Pasta Bake

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🍝 Rich and creamy pasta bake that combines tender chicken, aromatic pesto, and melted cheese in every bite
🧀 Perfect weeknight dinner that brings restaurant-quality Italian flavors right to your dinner table

• Total Time: 50 minutes
• Yield: 6–8 servings 1x

Ingredients

Scale 1x2x3x

10 oz rigatoni for holding creamy pesto sauce well

1.5 lbs chicken tenderloins for lean, quick-cooking protein that stays tender

1.5 tablespoons Italian seasoning for aromatic herb blend and savory depth

1/3 cup prepared pesto for the herbaceous backbone of the sauce

1.5 cups shredded mozzarella for melting beautifully into a golden topping

1 cup shredded or grated Parmesan cheese for adding umami and sharpness

2 tablespoons butter for building the base of the creamy sauce

1 medium yellow onion for sweetness and structure in the sauce

4 garlic cloves for aromatic flavor boost

2 teaspoons Cajun seasoning for smoky-spicy note that complements pesto

1 teaspoon red pepper flakes for extra heat

3 cups whole milk for creating the creamy texture

8 oz sun-dried tomatoes for concentrated tomato sweetness and tang

1.5 cups broccoli florets for adding color, crunch, and nutrients

2 cups fresh baby spinach for wilting into the sauce for extra greens

Olive oil for searing the chicken and preventing sticking

Salt and freshly ground black pepper for seasoning to taste

Cook Mode Prevent your screen from going dark

Instructions

1-First Step: Mise en place and seasoning the chicken Gather all ingredients and dice the chicken tenderloins into bite-sized pieces. Toss the diced chicken with 1 tablespoon olive oil, 1.5 tablespoons Italian seasoning, 1 teaspoon salt, and freshly ground black pepper so each piece is evenly coated. Preheat a large pot of salted water for the rigatoni. Having everything ready makes the cooking sequence smooth and prevents overcooking.

2-Second Step: Cook the chicken Heat an oven-safe skillet over medium heat and add 2 tablespoons olive oil. Add the seasoned chicken in a single layer and cook about 4 to 5 minutes per side, until the outside is golden and the internal temperature reaches 165°F. Remove the chicken to a plate and set aside. Leaving the fond those browned bits in the skillet adds flavor to the sauce.

3-Third Step: Build the creamy sauce Reduce the skillet heat to medium-low and melt 2 tablespoons unsalted butter. Add the diced yellow onion and sauté until translucent, about 2 to 3 minutes. Add the minced garlic and cook until fragrant, about 30 seconds to 1 minute. Pour in 3 cups whole milk, then stir in 2 teaspoons Cajun seasoning, 1 teaspoon red pepper flakes if using, and salt and pepper to taste. Add the drained 8 oz sun-dried tomatoes and 1.5 cups broccoli florets. Bring the mixture to a low simmer and cook until the broccoli softens, about 5 minutes. Keep the heat gentle to avoid curdling.

4-Fourth Step: Cook the pasta al dente While the sauce simmers, cook 10 oz rigatoni in the boiling salted water until al dente (about 1 to 2 minutes less than package directions). Reserve a cup of pasta water before draining. Drain the pasta and toss briefly with a teaspoon of olive oil to prevent sticking while you finish the sauce.

5-Fifth Step: Finish the sauce and assemble Stir 2 cups fresh baby spinach into the warm sauce until wilted. Fold the cooked rigatoni and the seared chicken back into the skillet. Add 1/3 cup prepared pesto and stir gently so the sauce coats everything evenly. If the sauce seems too thick, add a splash of reserved pasta water to loosen it.

6-Final Step: Top with cheese and broil Preheat your oven broiler. Sprinkle 1.5 cups shredded mozzarella and 1 cup shredded or grated Parmesan evenly over the pasta in the skillet. Place the skillet under the broiler for 3 to 5 minutes, watching closely, until the cheese melts and begins to brown. Let the bake rest for a few minutes before serving so the sauce sets slightly and slices hold together.

Notes

🧀 Grate your own Parmesan and mozzarella cheese for better melting and flavor
🍝 Cook pasta to al dente to avoid mushy texture after baking
🔥 Watch the broiler carefully as it heats quickly to prevent burning the cheese

• Author: Brandi Oshea
• Prep Time: 20 minutes
• Cook Time: 30 minutes
• Category: Main Dish
• Method: Baking
• Cuisine: Italian-American
• Diet: Non-Vegetarian

Nutrition

• Serving Size: 1 serving
• Calories: 485
• Sugar: 8
• Sodium: 850
• Fat: 24
• Saturated Fat: 14
• Unsaturated Fat: 8
• Trans Fat: 0.5
• Carbohydrates: 42
• Fiber: 4
• Protein: 32
• Cholesterol: 95