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!
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
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.
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.
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.
✔️ 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!