These stuffed shells in homemade marinara sauce are simple to make and delicious comfort food at its best.

Stuffed Shells with Marinara in dish

It’s hard to believe that these stuffed shells would taste as good as they do because the recipe so simple to make.

These stuffed shells are cooked in an easy marinara sauce.

And no need to dirty another pan when making this delicious sauce because it’s made in the same casserole dish that the shells are baked in.

Stuffed Shells with Marinara in bowl

About the Cheese Filling

These shells are stuffed with filling made with Italian sausage, 3 types of cheese (ricotta, mozzarella, and Parmesan) along with chopped parsley and green onion.

The combination of the flavors in the filling, the shells that are cooked firmly (al-dente), and the marinara sauce tastes wonderful together.

Let’s check out the ingredients.

Stuffed Shells Ingredients

Pasta Shells – Jumbo pasta shells, water and salt

Marinara Sauce – Tomato sauce, water, granulated garlic, dried oregano leaves and ground black pepper

Filling – Cooked and crumbled Italian sausage, ricotta cheese, shredded fresh Parmesan cheese (or grated), shredded mozzarella cheese, chopped parsley and chopped green onion

Toppings – Shredded mozzarella cheese and fresh shredded Parmesan cheese (or grated)

Baking Dish – A 2-quart, 7-inch by 11-inch rectangular baking dish (about 1-1/2 inches deep)

HOW TO MAKE THIS RECIPE

A printable recipe with the measurements and instructions is located at the bottom of this post.

Preheat the oven to 375 degrees F.

For the Marinara Sauce:

Pour Tomato Sauce in Pan

To a casserole dish,

Add Tomato Sauce to Dish

…add tomato sauce.

Pour Water in Tomato Sauce

Fill the empty can of tomato sauce about half full with water and pour the water in with the tomato sauce (a great way to use up the tomato sauce that sticks to the inside of the can).

Add Garlic Powder in Tomato Sauce

Next, to the tomato mixture add granulated garlic…

Add Pepper in Tomato Sauce

pepper…

Add Dried Oregano in Tomato Sauce

…and oregano.

Stir Oregano in Tomato Sauce

Stir the ingredients together,

Seasoned Tomato Sauce in dish

and set aside.

For the Shells:

Boil Water in Pot

In a large saucepan, add water and bring it to a boil.

Add Salt to Boiling Water

To the boiling water, add salt.

Pasta Shell in Boiling Water

To the pot…

Pasta Shells in Boiling Water

…add the shells and cook until the shells are al dente (firm) (according to package directions) (about 8 minutes).

Boiling Water with Pasta

Boiling Pasta in Pot

Cooked Pasta Shells on Plate

Drain the shells and set aside (don’t rinse the shells).

TIP – Don’t rinse the pasta after cooking it. When pasta is rinsed, the starch is removed.

The starch on pasta helps to hold and absorb the sauce so it’s important to keep the starch on the pasta.

For the Filling:

Cooked Sausage in Bowl

In a medium size bowl, add the cooked and crumbled Italian sausage,

Ricotta Cheese and Sausage in Bowl

…ricotta cheese,

Chopped Green Onions on board

Stuffed Shell Mixture in Bowl

chopped green onion,

Add Shredded Cheese in Bowl

Add Shredded Cheese in Bowl

shredded Parmesan cheese,

Add Mozzarella Cheese in Bowl

shredded mozzarella cheese,

Chopped Parsley on Board

and chopped parsley.

Stuffed Shells Filling in Bowl

Next,

Stuffed Shells Filling in Bowl

…stir together.

Stuffed Shells Filling in Bowl

Using a small spoon,

Stuffed Shells with Filling on plate

…fill each pasta shell with the filling.

Filled Stuffed Shells on plate

Next, give the sauce one more stir.

Stuffed Shells with Sauce in dish

and add the shells, filling side up to the baking dish in the sauce.

For the Topping:

Stuffed Shells with Sauce in dish

Add Shredded Cheese on Shells

Top the shells with the remaining shredded mozzarella,

Cheese Stuffed Shells with Sauce in dish

and shredded Parmesan cheese.

Cheese Stuffed Shells with Sauce in dish

Bake uncovered in a preheated oven (at 375 degrees F.) until the cheese topping is completely melted and the edges of the cheese are starting to turn slightly brown (which is about the same amount of time that the cheese and sausage filling heats up all the way through – 20 minutes).

Cheese Stuffed Shells with Sauce in bowl

Serve warm with a side salad and garlic bread…

Cheese Stuffed Shells with Sauce in bowl

…or just by itself.

Cheese Stuffed Shells with Sauce in bowl

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Stuffed Shells with Marinara

3-Cheese Stuffed Shells in Homemade Marinara Sauce

These stuffed shells in homemade marinara sauce are simple to make and delicious comfort food at its best.
5 from 2 votes

Ingredients

For the Marinara Sauce:

  • 1 can (15 ounces) tomato sauce
  • 3/4 cup water
  • 1 teaspoon granulated garlic
  • 1 teaspoon ground black pepper
  • 1 teaspoon dried oregano leaves

For the Shells and Filling:

  • 12 uncooked (dry) jumbo pasta shells
  • Water for boiling the shells
  • 3 teaspoons salt for the boiling water

For the Filling:

  • 1 cup cooked and crumbled Italian sausage
  • 1/2 cup ricotta cheese
  • 1/3 cup fresh shredded Parmesan cheese or grated Parmesan cheese
  • 1/3 cup shredded mozzarella cheese
  • 1 tablespoon (heaping) chopped fresh parsley curly or Italian parsley
  • 2 green onions chopped (including the green top part)

For the Toppings:

  • 1/4 cup shredded mozzarella cheese
  • 2 tablespoons fresh shredded Parmesan cheese or Grated Parmesan Cheese

Equipment

  • 2-quart (7-inch x 11-inch) rectangular baking/casserole dish about 1-1/2 inches deep

Instructions

  • Preheat the oven to 375 degrees F.

For the Marinara Sauce:

  • To a casserole dish, add tomato sauce, granulated garlic, pepper and oregano. 
  • Fill the empty can of tomato sauce about half full with water (about 3/4 cup), and pour the water in with the tomato sauce (a great way to use up the tomato sauce that sticks to the inside of the can).
  • Stir the ingredients together and set aside.

For the Pasta Shells:

  • In a large saucepan, add water and bring it to a boil. To the boiling water, add salt. 
  • To the pot, add the shells and cook until the shells are al dente (according to package directions) (about 8 minutes).
    Drain the shells and set aside (don't rinse the shells).
  • Don’t rinse the pasta after cooking it. When pasta is rinsed, the starch is removed. The starch on pasta helps to hold and absorb the sauce so it’s important to keep the starch on the pasta.

For the Filling:

  • In a medium size bowl, add the cooked and crumbled Italian sausage, ricotta cheese, chopped green onion, Parmesan cheese, shredded mozzarella cheese, and chopped parsley.  Stir together. 
  • Using a small spoon, carefully fill each pasta shell with the filling.

For the Assembly:

  • Stir the sauce that's in the casserole dish.
    To the casserole dish, add the shells with the filling side up in the sauce. 

For the Toppings:

  • Top the shells with the remaining shredded mozzarella, and shredded Parmesan cheese. 
  • Bake uncovered in a preheated oven (at 375 degrees F.) until the cheese topping is completely melted and the edges of the cheese are starting to turn slightly brown; which is about the same amount of time that the cheese and sausage filling heats up all the way through (about 20 minutes).
  • Serve warm.

Notes

TIP:

Don’t rinse the pasta after cooking it. When pasta is rinsed, the starch is removed. The starch on pasta helps to hold and absorb the sauce so it’s important to keep the starch on the pasta.

Serving Suggestions

These stuffed shells with marinara sauce make a light main dish that tastes great served with “Antipasto Salad with Salami” and an “Easy Garlic Bread“, or just served by its delicious self.

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