Cheesy Tortellini Casserole

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Photography Credit: Elise Bauer

Do you ever get a craving for lasagna, and start thinking of the different ingredients you’ll need, but stop when you remember that it will take close to 2 hours to make and you want something sooner rather than later?

This cheesy tortellini casserole is for those moments. It’s a bit like a baked lasagna—with pasta, cheese, tomato sauce—but a lot easier to put together.

Of course the reason it’s so easy to assemble is that you are starting with already made cheese filled tortellini, which can usually be found in the frozen food section of your grocery store (if not, frozen ravioli will work too).

Cheesy Tortellini Casserole

As you boil the water for the tortellini, you make the sauce. Then toss the cooked tortellini with the sauce, put in a casserole dish, cover with Mozzarella and bake until bubbly. That’s it!

In this version we are including chopped cremini mushrooms because they taste great, and chopped chard for a healthy green. You could use spinach instead of the chard, or skip it all together.

Or you could use sausage instead of the mushrooms for a meat-based approach. This hearty vegetarian casserole is perfect for a Meatless Monday meal.

Cheesy Tortellini Casserole Recipe

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  • Prep time: 10 minutes
  • Cook time: 50 minutes
  • Yield: Serves 4 to 6

Ingredients

  • 1 1/2 pounds (24 ounces) prepared frozen cheese tortellini
  • Salt
  • 12 ounces cremini or white button mushrooms, roughly chopped or sliced into 1/4-inch slices
  • 1 Tbsp butter
  • 3 cloves garlic, minced (about 1 Tbsp)
  • 1 28-ounce can crushed tomatoes
  • 1 large bunch swiss chard, ribs removed, leaves chopped (about 2 cups) OR 2 cups fresh chopped spinach OR 1/2 cup frozen spinach
  • 1 1/2 teaspoons dried basil or 1 Tbsp finely chopped fresh basil
  • 1/4 teaspoon fennel seeds, crushed
  • Pinch of red pepper flakes
  • 1/2 cup grated Parmesan cheese
  • 4 to 6 ounces Mozzarella cheese slices, enough to cover the surface of the casserole

Method

1 Boil the tortellini: Heat a large pot with 3 quarts of water and 1 1/2 tablespoons of salt on high heat. When the water starts to boil, add the tortellini. Once the water returns to a boil, cook for an additional 2 minutes.

You want the pasta cooked al dente because it will continue to cook when baked in the casserole. Remove from heat and drain. Set aside.

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2 Sauté the mushrooms: While you are preparing the pasta, start on the sauce. Heat a large thick bottomed stick-free (hard anodized aluminum or cast iron are best) pan on medium heat.

Add the mushrooms. "Dry" sauté them for 5 to 10 minutes with no added fat. As the mushrooms heat they will release water and cook in their own juices.

Once the mushrooms are well coated with the water that they are releasing, stir in a tablespoon of butter.

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3 Add garlic, fennel seeds, red pepper flakes, crushed tomatoes, basil, chard, Parmesan: Add the garlic, crushed fennel seeds, and red pepper flakes to the mushrooms and cook a minute more.

Add the crushed tomatoes and the dried or fresh basil. Increase the heat to bring to a simmer, then lower the heat to maintain a low simmer for 5 minutes.

Add the chopped chard and cook for 5 more minutes until the chard begins to wilt.

Stir in the grated Parmesan cheese. Add 1/2 teaspoon of salt (more or less to taste).

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4 Combine tortellini and sauce in casserole dish, top with Mozzarella: Pre-heat oven to 400°F. Stir the cooked tortellini into the sauce and remove from heat. Spread the tortellini mixture into a 9x13 casserole dish in an even layer. Arrange a layer of sliced Mozzarella cheese over the top of the tortellinis.

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5 Bake: Cover with foil. (Either cover the casserole in a way that the foil is not touching the cheese or spread a little olive oil over the inside of the foil so that the casserole cheese does not stick to the foil while it cooks. You can also use stick-free foil.)

Bake at 400°F for 20 minutes. Remove foil and broil for 4 to 5 minutes more until top is lightly browned and bubbly.

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Cheesy Tortellini Casserole

Showing 4 of 23 Comments

  • tonja l blunt

    HI i MADE THIS FOR MY DAUGHTER, I USED FLAX SEEDS, AND INSTEAD OF BASIL I USED BAY LEAVES, (DIDN’T HAVE EITHER OF THOSE, CAME OUT DELICIOUSO!

  • Hayley

    I would like to make this recipe – but I’m wanting to freeze it so we have some ready- made meals for when our baby arrives. Would you recommend freezing before or after it is cooked?

  • Kyle

    This sounds delicious, but do you recommend any alternatives instead of using mushrooms?

  • Esther Lord

    Hello, just wanted to take a moment to thank you for sharing this wonderful dish. I made this for dinner last night and it was a big hit. Thanks again !!!

  • Sue H

    I made this recipe last night for dinner for my “picky” husband and me. It was delicious and I especially liked the flavor of the sauce. Thank you for sharing this recipe with us.

    Since it was eaten last night for just my husband & me, I froze half for another dinner later when my mother can join us. I know she’ll love it too because Swiss chard is one of her all-time favs!!

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