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Delicious and cheesy Pasta Shells full of a spinach, mushrooms and tomatoes filling. Stuffed Shells Florentine are vegetarian, freezer-friendly, and therefore the perfect easy, weeknight dinner!

Pasta shells full of a cheesy spinach and mushroom mixture is that the ultimate comfort dinner, and it’s very easy to form .


Stuffed shells are a fun and attractive option for pasta night, but also an ingenious thanks to sneak in some good-for-you veggies. Covered and masked in cheese, of course. 

Baked on a bed of flavorful marinara until cheesy and bubbly, these simple stuffed shells are great for a family dinner or maybe a pot luck. It makes tons of filling that holds up well, and you’ll be ready to stuff around 20 shells. 



  • 2 cans (14 ounces each) diced tomatoes, drained
  • 1 box (12 ounces) Jumbo Pasta Shells
  • 1 tablespoon butter, divided
  • 10 to 12 ounces fresh baby spinach
  • 8 ounces sliced mushrooms
  • 4 cloves garlic, minced
  • salt and fresh ground pepper, to taste
  • 1 teaspoon Italian seasoning
  • 1/2 teaspoon dried basil
  • 1 cup marinara sauce
  • 1 1/2 cups part-skim shredded mozzarella cheese
  • chopped fresh parsley


  1. Preheat oven to 350F.
  2. Cook Pasta Shells in boiling water for 8 minutes, or until al dente. DO NOT overcook because they will tear and fall apart.
  3. In a large skillet, melt 1/2 tablespoon butter over medium-high heat.
  4. Add sliced mushrooms and cook for 5 minutes.
  5. Stir in garlic; add remaining butter, and continue to cook for 1 minute.
  6. Add in drained tomatoes.
  7. Season with salt, pepper, Italian seasoning, and basil; bring to a simmer.
  8. Stir in the spinach. Since we're using a lot of spinach, you will want to cook it in batches. As soon as one batch is cooked down, add the next - I break it up into 3 batches.
  9. Remove from heat. Taste for seasonings and adjust accordingly.
  10. Drain shells and rinse with cold water; pat dry with paper towel.
  11. Spread 1-cup marinara sauce on the bottom of a 9x13 baking dish.
  12. Stuff each shell with the spinach mixture and arrange over the marinara sauce in the baking dish.
  13. Sprinkle the stuffed shells with shredded mozzarella cheese.
  14. Bake for 20 to 25 minutes, or until bubbly.
  15. Remove from oven.
  16. Garnish with parsley and serve.

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