Print

Tortellini Spinach Casserole with Tomatoes – Cheesy, Cozy, Pure Comfort!Tortellini spinach casserole with tomatoes

This baked Tortellini Spinach Casserole is a weeknight dream: tender pasta stuffed with cheese, saucy tomatoes, fresh spinach, and a melty, golden layer of cheese on top. It’s hearty, easy, and 100% satisfying!

Ingredients

Scale

For the casserole:

  • 1 (20 oz / 550 g) package refrigerated or frozen cheese tortellini

  • 2 tablespoons olive oil

  • 3 cloves garlic, minced

  • 4 cups fresh baby spinach (roughly chopped if you like)

  • 1 can (14 oz / 400 g) diced tomatoes, drained slightly

  • 1/2 cup (120 ml) tomato sauce or marinara

  • 1 teaspoon Italian seasoning

  • 1/2 teaspoon crushed red pepper flakes (optional, for a little kick!)

  • Salt and pepper, to taste

  • 1 1/2 cups (150 g) shredded mozzarella cheese

  • 1/4 cup (25 g) grated Parmesan cheese

Instructions

1. Cook the tortellini:

  • Bring a big pot of salted water to a boil.

  • Cook the tortellini according to package instructions until just al dente — usually about 2–3 minutes if fresh, a little longer if frozen.

  • Drain and set aside.


2. Sauté the spinach:

  • While the tortellini cooks, heat olive oil in a large oven-safe skillet (or regular skillet if you’ll transfer to a baking dish) over medium heat.

  • Add the garlic and sauté for 30 seconds until fragrant.

  • Toss in the spinach and cook until just wilted — about 2 minutes.

  • Stir in the diced tomatoes, tomato sauce, Italian seasoning, and red pepper flakes.

  • Simmer for a couple of minutes. Season with salt and pepper to taste.


3. Assemble and bake:

  • Add the cooked tortellini to the skillet and toss everything gently to combine.

  • Sprinkle mozzarella and Parmesan evenly over the top.

  • If using an oven-safe skillet, pop it straight into a preheated oven at 375°F (190°C).
    (If not, transfer everything to a greased baking dish first.)

  • Bake for 15–20 minutes, until bubbly and golden.


To Serve:
Let it cool for a few minutes (that cheese will be molten hot!). Garnish with a little extra Parmesan or chopped basil if you want to get fancy. Serve with a crisp green salad and garlic bread for the ultimate cozy meal.

Notes

✔️ Swap spinach for kale or arugula if you want a peppery twist.
✔️ Add cooked Italian sausage or shredded rotisserie chicken for extra protein!
✔️ Love it extra cheesy? Layer a few slices of provolone on top before baking.
✔️ Meal prep tip: Assemble ahead, cover, and refrigerate — then bake when you’re ready to eat!