This Chicken Pesto Tortellini Bake is one of those weeknight wonders that tastes like it took all afternoon but comes together quickly. Creamy, cheesy, and studded with tender chicken, vibrant basil pesto, sweet red pepper, and bright spinach, it’s comfort food with a fresh, herby twist. It’s the kind of dish that disappears fast at the table and makes great leftovers for lunch the next day.

What I love about this version of Chicken Pesto Tortellini Bake is how simple the steps are and how much flavor each component brings. Refrigerated or frozen and thawed cheese tortellini provides a rich, pillowy pasta base. Cubed boneless, skinless chicken breasts add satisfying substance. A light sauté of pepper and onion wakes up the vegetables, then pesto melts into a lush, creamy sauce with chicken broth and heavy cream. Fontina and shaved Parmesan top the whole thing, melting into golden, gooey bliss. It’s an easy crowd-pleaser that’s elegant enough for guests yet cozy enough for a busy weeknight.

Why you’ll love this recipe

Fast: Ready in about an hour with minimal fuss.
Comforting: Creamy sauce and melted cheese for a cozy family dinner.
Flexible: Uses refrigerated or frozen (thawed) cheese tortellini and pantry-pasta staples.
Balanced: Fresh spinach and red pepper add color and nutrition without overwhelming the creamy base.

Ingredients

40 ounces cheese tortellini, refrigerated or frozen and thawed
1 pound boneless, skinless chicken breasts, chopped into 1 inch cubes
1 tablespoon butter
1 red bell pepper, seeded and chopped
1/2 red onion, peeled and chopped
6 ounces basil pesto or homemade pesto
2 cups fresh baby spinach
2 cups chicken broth
1 cup heavy cream
2 cups shredded fontina cheese
1/2 cup shaved Parmesan cheese
Salt and pepper

Make-ahead and serving tips

Prep ahead: Chop the chicken and vegetables the night before to save time.
Leftovers: Store in an airtight container in the refrigerator for up to 3 days. Reheat gently in the oven or microwave, adding a splash of broth or cream if needed to loosen the sauce.
Variations: Swap fontina for mozzarella if preferred, or add a pinch of red pepper flakes for heat. You can stir in sun-dried tomatoes for a tangy twist.

Equipment

Large skillet or sauté pan
Large pot (to cook or reheat tortellini if needed)
9×13-inch baking dish (or similar)
Mixing spoon and spatula
Measuring cups and spoons

Step-by-step directions

Follow these clear steps to make the Chicken Pesto Tortellini Bake. The directions are rewritten from the original list to be easy to follow while keeping the order of tasks intact and honoring all ingredient amounts.

Preheat and prep: Preheat your oven to 375°F (190°C). If your cheese tortellini is frozen and has not been thawed, allow it to thaw in the refrigerator or run briefly under cool water to separate pieces. Measure out all ingredients so everything is ready when you start cooking.
Sear the chicken: Heat a large skillet over medium-high heat and add 1 tablespoon butter. Once the butter has melted and is foaming slightly, add the 1 pound chopped boneless, skinless chicken breasts (1 inch cubes) to the skillet in a single layer. Season lightly with salt and pepper. Cook the chicken, stirring occasionally, until it is browned on the outside and cooked through, about 5–7 minutes depending on cube size. Transfer the cooked chicken to a plate and set aside.
Sauté the vegetables: In the same skillet, add the 1/2 red onion (chopped) and the 1 red bell pepper (seeded and chopped). Sauté over medium heat until the vegetables soften and the onion becomes translucent, about 4–6 minutes. Scrape up any flavorful browned bits from the bottom of the skillet.
Create the sauce base: Pour 2 cups chicken broth into the skillet with the softened vegetables. Stir to combine and bring the mixture to a gentle simmer. Let the broth reduce slightly for 2–3 minutes to concentrate flavor.
Add cream and pesto: Lower the heat to medium-low and stir in 1 cup heavy cream until combined. Then add 6 ounces basil pesto (store-bought or homemade) and stir until the sauce is smooth and evenly green. Taste the sauce and season with additional salt and pepper if needed.
Combine chicken, spinach, and tortellini: Return the cooked chicken to the skillet and stir to coat in the pesto-cream sauce. Add 2 cups fresh baby spinach and stir until the leaves begin to wilt into the sauce. Next, fold in the 40 ounces cheese tortellini (refrigerated or thawed if previously frozen), ensuring every piece is coated with the sauce. If your tortellini feels overly thick or clumped, warm it briefly in the skillet or a pot of simmering water to separate pieces before adding.
Assemble in a baking dish: Transfer the saucy tortellini, chicken, and vegetable mixture into a lightly greased 9×13-inch baking dish, spreading everything into an even layer. Sprinkle 2 cups shredded fontina cheese evenly across the top, followed by 1/2 cup shaved Parmesan cheese.
Bake: Place the baking dish in the preheated oven and bake at 375°F (190°C) for 20–25 minutes, or until the cheese is melted and bubbling and the edges are lightly golden. If you prefer a crispier cheese top, switch the oven to broil for the last 1–2 minutes—watch closely so the cheese doesn’t burn.
Rest and serve: Remove the Chicken Pesto Tortellini Bake from the oven and let it rest for 5 minutes before serving. This short rest helps the sauce settle and makes it easier to portion. Serve hot, garnished with a few extra shavings of Parmesan if desired, and season with a final crack of black pepper.

Notes on flavors and substitutions

Cheese tortellini: Using refrigerated cheese tortellini works great; if your package was frozen, make sure it’s thawed before adding to the skillet to ensure even heating and to prevent excess moisture in the baking dish.
Chicken: The recipe calls for 1 pound boneless, skinless chicken breasts, chopped into 1-inch cubes. You can use thighs if you prefer a slightly richer flavor and added tenderness.
Pesto: Use 6 ounces of basil pesto. Homemade pesto brightens the whole dish, but store-bought is an excellent time-saver and still flavorful.
Bread or greens: Serve with crusty bread to soak up extra sauce or a crisp green salad to cut through the richness.

Nutrition snapshot (approximate per serving)

This dish is rich and creamy, offering a balanced blend of protein, carbs, and fats. Exact nutrition will vary based on specific brands and portion sizes, but you can expect a satisfying, hearty meal with good protein from the chicken and cheese and carbohydrates from the tortellini.

Frequently asked questions

Can I make this in a single skillet instead of baking? Yes. Combine the chicken, tortellini, vegetables, pesto, broth, and cream in a large ovenproof skillet or sauté pan. Top with cheeses and place the skillet under the broiler until bubbly and golden.

Can I freeze this dish? You can freeze the assembled dish before baking. Wrap tightly and freeze for up to 2 months. Thaw overnight in the refrigerator before baking according to the directions, adding a few extra minutes if needed.

How do I keep the tortellini from getting soggy? Avoid overcooking the tortellini before baking. If using thawed frozen tortellini, separate pieces gently and fold into the sauce just until coated. Baking helps the sauce thicken and the top to become nicely set.

Final thoughts

This Chicken Pesto Tortellini Bake is a dependable, flavorful meal that feels special without complicated steps. It’s perfect for busy families, potlucks, or anyone craving a creamy pasta bake with bright pesto flavor and melty cheese. The combination of tender chicken, pillowy tortellini, and a lush pesto-cream sauce delivers comforting satisfaction in every bite.

Try this recipe when you want something that’s both easy to prepare and impressive enough to share—it’s a repeat-worthy dish that consistently gets raves at the dinner table.