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Creamy Cheesy Tortellini Casserole

Jessica T. Brown
A creamy, cheesy tortellini bake with tender pasta, flavorful marinara, and melted mozzarella cheese.
This simple, three-ingredient casserole comes together in under 30 minutes, making it perfect for busy weeknights or meal prep.
Prep Time 5 minutes
Cook Time 30 minutes
Total Time 35 minutes
Course Main Dish
Cuisine Italian
Servings 4

Equipment

  • 1 medium saucepan (for boiling pasta)
  • 1 colander or strainer
  • 1 8×8 or 11×7 baking dish
  • Measuring cups and spoons
  • Wooden spoon or spatula

Ingredients
  

  • 1 package 1 ½ lbs tortellini, fresh or frozen, any flavor
  • 2 cups marinara sauce
  • 2 cups freshly grated mozzarella cheese

Optional: Mix mozzarella with Parmesan for extra flavor.

Instructions
 

  • Preheat the Oven and Prepare Baking Dish: Start by preheating your oven to 350°F (175°C).
    This ensures that the oven is ready for the tortellini bake as soon as your ingredients are combined.
    Lightly grease your baking dish (8×8 or 11×7 inches) with a small amount of oil or nonstick spray to prevent sticking and make cleanup easier.
    Preparing the oven and dish first sets you up for smooth, stress-free cooking.
  • Boil the Tortellini: Fill a medium saucepan with water and bring it to a rolling boil over high heat.
    Add a pinch of salt to the water to enhance the flavor of the pasta.
    Once the water is boiling, add your package of tortellini (fresh or frozen).
    Cook the tortellini according to the package instructions or until they float to the surface, usually 6–8 minutes for fresh tortellini and slightly longer if frozen.
    Stir occasionally to prevent the pasta from sticking together.
  • Drain and Prepare the Pasta: Once the tortellini are cooked, carefully drain them using a colander or strainer.
    Allow the pasta to sit for 1–2 minutes to ensure all excess water drains away.
    This prevents the casserole from becoming watery when combined with the sauce.
    Gently shake the colander to remove any remaining liquid and make sure the tortellini are not clumped together.
  • Combine Pasta with Marinara Sauce: Transfer the drained tortellini into your prepared baking dish.
    Pour 2 cups of marinara sauce evenly over the pasta, making sure every piece is coated.
    Use a wooden spoon or spatula to gently fold the sauce into the tortellini, ensuring the sauce reaches the bottom of the dish and fully surrounds the pasta.
    Even coating guarantees a flavorful, cohesive bake.
  • Top with Mozzarella Cheese: Sprinkle 2 cups of freshly grated mozzarella cheese evenly over the top of the sauced tortellini.
    For extra richness and depth of flavor, you can mix in a handful of Parmesan cheese or layer a few slices of provolone.
    The cheese will melt during baking, creating a golden, bubbly topping that adds a creamy, indulgent texture to every bite.
  • Bake the Tortellini Casserole: Place the baking dish in the preheated oven and bake uncovered for 20–25 minutes, or until the cheese is completely melted and begins to bubble around the edges.
    Baking allows the flavors to meld and the sauce to slightly thicken, while the cheese creates a luscious, golden crust.
  • Optional Broil for Golden Finish: For a perfectly browned top, switch your oven to broil for 5–6 minutes.
    Keep a close eye on the casserole to prevent burning.
    This final step gives the cheese a lightly crisp, golden-brown finish and enhances the visual appeal of your dish.
  • Serve Immediately: Remove the tortellini bake from the oven and allow it to rest for 2–3 minutes before serving.
    This short resting period allows the sauce to set slightly, making it easier to portion out.
    Serve warm with a fresh side salad, garlic bread, or roasted vegetables.
    Each serving will be creamy, cheesy, and packed with comforting flavors.
  • Store Leftovers Safely: Leftover tortellini bake can be stored in an airtight container in the refrigerator for 3–4 days.
    Reheat gently in the oven or microwave, covering with foil to prevent the cheese from drying out.
    For longer storage, the baked tortellini can also be frozen in portions and reheated when needed.

Notes

  • Use either fresh or frozen tortellini; adjust cooking time slightly if using frozen.
  • Grate your own mozzarella for a creamier, melty topping; pre-shredded cheese may contain anti-caking agents that affect melting.
  • Try mixing mozzarella with Parmesan or provolone for extra flavor depth.
  • Ensure tortellini is drained well to prevent a watery casserole.
  • You can add vegetables such as spinach, mushrooms, or roasted peppers for added fiber and nutrients.
  • For added protein, incorporate cooked chicken, sausage, or tofu.
  • Keep the casserole loosely covered with foil if baking at higher temperatures to prevent cheese from burning.