This tortellini casserole is a creamy, cheesy baked pasta dish made with tender cheese-filled tortellini, a rich tomato cream sauce, and a golden melted cheese topping—perfect for an easy and comforting meal.
Preheat oven to 375°F (190°C) and grease a 9x13-inch baking dish.
Cook tortellini according to package instructions, reducing cook time by 2 minutes. Drain well.
Heat olive oil in a skillet and sauté garlic until fragrant.
In a bowl, combine marinara sauce, heavy cream, Italian seasoning, salt, and pepper.
Spread a thin layer of sauce in the baking dish, then add half the tortellini.
Add half the remaining sauce and sprinkle with mozzarella and Parmesan cheese.
Repeat layers with remaining tortellini, sauce, and cheeses.
Cover with foil and bake for 20 minutes.
Remove foil and bake an additional 10–15 minutes until golden and bubbly.
Let rest 5–10 minutes before serving.
Notes
Cook tortellini slightly under al dente to prevent overcooking during baking. Let casserole rest 5–10 minutes before serving. Store leftovers in the refrigerator for 3–4 days or freeze up to 3 months.