Tortellini Casserole
There’s something comforting about a bubbling, cheesy bake that combines tender pasta with bright, colorful vegetables. This Tortellini Casserole is just that: a weeknight-friendly, oven-ready dish that balances creamy sauce with crisp-tender veggies and melty cheese. It’s an easy dinner to assemble, forgiving if you swap in seasonal produce, and tasty enough to please picky eaters and veggie lovers alike. Read on for pantry-friendly tips, make-ahead options, and a clear, step-by-step method so your casserole comes out perfectly every time.
Why you’ll love this recipe
- Ready in about an hour with mostly hands-off oven time.
- Uses store-bought cheese-filled tortellini for great texture and flavor without fuss.
- Loads of colorful vegetables make it feel fresh and balanced.
- Comforting, creamy sauce that’s thickened with a small butter-and-flour roux for stability and richness.
Ingredients
All ingredient quantities are listed exactly as used in the recipe.
- Cooking spray
- 1 (19-ounce) package cheese-filled tortellini
- 2 tablespoons olive oil
- 1 cup snap peas
- 1 cup sliced carrots (1 medium carrot)
- 1 cup sliced baby bella mushrooms
- 3/4 cup thinly sliced mini bell peppers
- 1 cup sliced and halved summer squash
- 1 cup halved cherry tomatoes
- 1 cup frozen corn
- 1-1/2 tablespoons unsalted butter
- 1-1/2 tablespoons flour
- 1/3 cup vegetable stock or broth
- 1 cup milk (1%, 2%, or whole milk)
- 1/2 teaspoon roasted garlic powder
- 1/2 teaspoon salt
- 1/2 teaspoon pepper
- 1 teaspoon dried basil
- 1 teaspoon Italian seasoning
- 1 (8-ounce) package cream cheese
- 1/2 cup freshly grated Parmesan cheese
- Basil pesto, optional
Make-ahead and serving notes
- Assemble the casserole up to a day in advance, cover tightly, and refrigerate. Add a few extra minutes to baking time if baking straight from cold.
- Leftovers reheat well in the oven or microwave; add a splash of milk when reheating to loosen the sauce if it seems thick.
- For a brighter finish, stir a spoonful of basil pesto into the warm casserole before serving, or drizzle a little on each plate.
Step-by-step instructions
The directions below are rewritten into clear, easy-to-follow steps while keeping the ingredient amounts and overall order intact.
- Preheat the oven to 375°F (190°C). Lightly coat a 9×13-inch baking dish with cooking spray and set it aside.
- Bring a large pot of salted water to a boil. Add the 1 (19-ounce) package cheese-filled tortellini and cook according to the package directions until just al dente. Drain the tortellini and set aside in the pot or a large bowl; you’ll combine it with the sauce and vegetables shortly.
- While the pasta cooks, heat 2 tablespoons olive oil in a large skillet over medium-high heat. Add the vegetables—1 cup snap peas, 1 cup sliced carrots (from 1 medium carrot), 1 cup sliced baby bella mushrooms, 3/4 cup thinly sliced mini bell peppers, 1 cup sliced and halved summer squash, 1 cup halved cherry tomatoes, and 1 cup frozen corn. Sauté, stirring fairly frequently, until the mushrooms have softened and the other vegetables are crisp-tender, about 5 to 7 minutes. Remove the skillet from the heat and set aside.
- Wipe the skillet clean or use a small saucepan and add 1-1/2 tablespoons unsalted butter. Melt the butter over medium heat. Once melted, sprinkle in 1-1/2 tablespoons flour and whisk continuously for about 1 minute to cook the raw flour taste and form a roux.
- Gradually whisk in 1/3 cup vegetable stock or broth and then 1 cup milk (1%, 2%, or whole), making sure the mixture is smooth and free of lumps. Continue to cook and whisk until the sauce thickens slightly, about 2 to 3 minutes.
- Stir in the seasonings: 1/2 teaspoon roasted garlic powder, 1/2 teaspoon salt, 1/2 teaspoon pepper, 1 teaspoon dried basil, and 1 teaspoon Italian seasoning. Reduce the heat to low.
- Add 1 (8-ounce) package cream cheese to the sauce in chunks. Stir until the cream cheese melts and the sauce becomes smooth and creamy. If needed, gently warm the sauce so the cream cheese fully incorporates.
- Remove the pan from the heat and stir in 1/2 cup freshly grated Parmesan cheese until melted and evenly distributed.
- Combine the drained tortellini and the sautéed vegetables in the pot or a large mixing bowl. Pour the creamy sauce over the tortellini and vegetables and gently toss until everything is evenly coated.
- Transfer the tortellini and sauce mixture to the prepared 9×13-inch baking dish, spreading it into an even layer. If you like, dot the top with a few small spoonfuls of basil pesto for an aromatic finish (this is optional).
- Bake in the preheated 375°F (190°C) oven until the casserole is heated through and the top is slightly golden around the edges, about 20 to 25 minutes. If you prefer a browner top, broil on high for 1 to 2 minutes—watch closely to avoid burning.
- Remove the casserole from the oven and let it rest for 5 minutes before serving. This short rest helps the sauce set slightly and makes it easier to portion.
Recipe tips and troubleshooting
- If your sauce seems too thick after baking, stir in a tablespoon or two of milk until you reach the desired consistency.
- To make this lighter, use 1% milk and reduce olive oil to 1 tablespoon; the casserole will still be creamy thanks to the cream cheese and Parmesan.
- Swap vegetables based on what you have: green beans, roasted red peppers, or spinach all work well. If using spinach, stir it into the hot sauce just until wilted before mixing with the tortellini.
- For a cheesier top, sprinkle an extra 1/2 cup Parmesan or a mix of Parmesan and shredded mozzarella over the casserole before baking.
Serving suggestions
Serve this Tortellini Casserole with a simple green salad dressed in lemon vinaigrette or with crusty bread to scoop up every last bit of creamy sauce. A light, crisp white wine or sparkling water with lemon also pairs nicely.
Storage
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven at 350°F (175°C) until warmed through, or microwave individual portions, stirring and adding a splash of milk if the casserole has thickened.
Final thoughts
This Tortellini Casserole is a colorful, comforting meal that comes together with minimal effort. The cheese-filled tortellini provides satisfying bites while the medley of vegetables keeps things fresh and vibrant. Whether for a busy weeknight or an easy weekend dinner, this casserole hits the cozy spot while being flexible enough to adapt to what’s in your fridge.
Tortellini Casserole
A cheesy, vegetable-packed tortellini casserole baked in a creamy sauce.
Ingredients
Equipment
Method
- Preheat the oven to 350°F (175°C) and grease a 9x13-inch baking dish with cooking spray.
- Bring a large pot of water to a boil and add 2 teaspoons salt.
- Prepare the vegetables: trim snap peas, peel and slice the carrot, halve cherry tomatoes, and thinly slice mushrooms, mini bell peppers, and summer squash.
- Cook the tortellini according to package directions; in the last 2 minutes of cooking, add the snap peas and sliced carrots. Drain and transfer the tortellini and vegetables to the prepared baking dish.
- Heat olive oil in a skillet over medium-high heat and sauté mushrooms, mini bell peppers, and summer squash until crisp-tender, about 4–6 minutes. Pour the sautéed vegetables over the tortellini in the baking dish.
- Add the halved cherry tomatoes and frozen corn to the casserole and gently toss to combine evenly.
- In a small saucepan over medium heat, melt the butter. Whisk in the flour and cook 1 minute to form a roux.
- Slowly whisk in the vegetable stock until smooth, then gradually whisk in the milk. Cook, stirring, until the sauce thickens.
- Stir in roasted garlic powder, salt, pepper, dried basil, and Italian seasoning. Remove from heat and whisk in the softened cream cheese until the sauce is completely smooth.
- Pour the cream sauce over the tortellini and vegetables in the baking dish and stir gently to combine and level the surface. Sprinkle the grated Parmesan evenly over the top.
- Bake uncovered for 20–25 minutes, until heated through and the cheese is melted. If desired, broil 1–2 minutes to brown the top.
- Let the casserole rest briefly, then serve hot with basil pesto on the side if using.
Notes
- Leftovers may become watery when refrigerated.
- Do not freeze this casserole as texture can suffer.
- You can halve the recipe to make a smaller portion.
- Prepare ahead by assembling and refrigerating (unbaked) up to 24 hours, then bake until hot.
- If refrigerated unbaked, bake covered at 350°F for about 45–55 minutes or until heated through.
