Spinach Ricotta Pasta Shells

Ingredients

• Jumbo Pasta Shells – 1 (12-ounce) box: These oversized shells are the perfect vessel, designed to hold a generous amount of our delicious filling. Look for shells that are mostly intact in the box.
• Whole Milk Ricotta Cheese – 1 (32-ounce) container: The star of our filling. Using whole milk ricotta ensures a luxuriously creamy and rich texture that low-fat versions can’t quite replicate.
• Frozen Chopped Spinach – 1 (10-ounce) package, thawed: Provides a beautiful color, earthy flavor, and a boost of nutrients. It’s crucial that this is thawed and squeezed completely dry to avoid a watery filling.
• Grated Parmesan Cheese – 1 1/2 cups, divided: This hard, aged cheese adds a salty, nutty depth of flavor to both the filling and the golden-brown topping. Freshly grated is always best.
• Shredded Mozzarella Cheese – 2 cups, divided: The ultimate melting cheese. We’ll use some in the filling for gooeyness and plenty on top for that irresistible cheese pull.
• Large Egg – 1: This acts as a binder, helping the ricotta filling set up beautifully during baking so it doesn’t ooze out of the shells.
• Garlic – 3 cloves, minced: Freshly minced garlic provides an aromatic, pungent base flavor that cuts through the richness of the cheese.
• Marinara Sauce – 1 (32-ounce) jar: A high-quality store-bought marinara sauce saves time and provides a robust, tangy tomato base for the dish. Choose your favorite brand.
• Fresh Basil – 1/4 cup, chopped, for garnish (optional): Adds a touch of fresh, peppery, and sweet aroma that brightens up the finished dish.
• Fresh Parsley – 1/4 cup, chopped (optional): Contributes a clean, slightly peppery flavor and a vibrant green color to the filling and garnish.
• Salt – 1 teaspoon: Essential for enhancing all the other flavors in the dish. Adjust to your taste.
• Black Pepper – 1/2 teaspoon, freshly ground: Provides a touch of mild heat and spice that complements the creamy cheese.
• Nutmeg – 1/4 teaspoon, freshly grated (optional): A secret weapon in cream-based sauces and fillings, nutmeg adds a warm, aromatic note that elevates the ricotta filling.
• Olive Oil – 1 tablespoon: Used for sautéing aromatics or drizzling, it adds a foundational, fruity flavor.

Instructions

1. 1

   Prepare Your Workstation and Oven: Begin by preheating your oven to 375°F (190°C). Select a large 9×13 inch baking dish. This size is perfect for arranging the shells in a single layer. Pour about 1 cup of the marinara sauce into the bottom of the dish and spread it evenly. This sauce layer prevents the pasta shells from sticking and infuses them with flavor from the bottom up.

2. 2

   Cook the Pasta Shells: Bring a large pot of generously salted water to a rolling boil. Adding salt to the water is crucial as it’s the primary opportunity to season the pasta itself. Carefully add the jumbo pasta shells to the boiling water. Cook them according to the package directions, but aim for the lower end of the time range for an al dente texture. This is critical; the shells should be pliable enough to stuff but firm enough to hold their shape. Overcooked shells will tear easily. Once cooked, gently drain the shells using a colander and rinse them lightly with cool water to stop the cooking process and make them easier to handle. Lay them out in a single layer on a baking sheet to prevent them from sticking together while you prepare the filling.

3. 3

   Prepare the Spinach: While the pasta is cooking, focus on the spinach. If you haven’t already, thaw the frozen spinach completely. The most important step for a perfect filling is to remove as much water as possible. Place the thawed spinach in the center of a clean kitchen towel, cheesecloth, or several layers of heavy-duty paper towels. Gather the corners and twist, squeezing firmly over the sink until no more liquid comes out. You will be surprised at how much water is released. This step ensures your filling is creamy and thick, not watery and loose.

4. 4

   Create the Creamy Ricotta Filling: In a large mixing bowl, combine the 32 ounces of whole milk ricotta, 1 cup of the shredded mozzarella, 1 cup of the grated Parmesan cheese, the squeezed-dry spinach, the single large egg, the 3 minced garlic cloves, the chopped fresh parsley (if using), 1 teaspoon of salt, ½ teaspoon of black pepper, and the ¼ teaspoon of nutmeg. Using a sturdy spatula or wooden spoon, mix all the ingredients together until they are thoroughly combined. The mixture should be thick, creamy, and speckled with green from the spinach. Give it a small taste and adjust the salt and pepper if needed.

5. 5

   Stuff the Pasta Shells: Now for the fun part. You can stuff the shells in one of two ways. The traditional method is to use a small spoon to carefully fill each cooked pasta shell with a generous amount of the ricotta mixture. Alternatively, for a faster and cleaner process, you can use the piping bag trick. Snip off the corner of a large zip-top bag to create a wide opening, or use a pastry bag fitted with a large round tip. Fill the bag with the ricotta mixture, then simply pipe the filling into each shell. This method is efficient and ensures each shell is perfectly filled.

6. 6

   Assemble the Casserole: As you fill each shell, nestle it, opening-side up, into the sauce-lined 9×13 inch baking dish. Arrange them snugly in a single layer. They should be close but not overly crowded. Once all the shells are filled and arranged in the dish, pour the remaining marinara sauce over and around the shells. Be generous, ensuring they are well-covered, which will keep them moist during baking.

7. 7

   Top with Cheese and Bake: Sprinkle the remaining 1 cup of shredded mozzarella and the remaining ½ cup of grated Parmesan cheese evenly over the top of the shells and sauce. This combination will create a delicious, bubbly, and golden-brown crust. Cover the baking dish loosely with aluminum foil. The foil will trap steam, helping the shells cook through without the cheese on top burning.

8. 8

   Bake to Perfection: Place the covered baking dish in the preheated 375°F (190°C) oven. Bake for 25-30 minutes. After this initial baking time, carefully remove the aluminum foil. Return the dish to the oven and bake for another 10-15 minutes, or until the sauce is bubbly and the cheese on top is melted, golden brown, and slightly crispy in spots.

9. 9

   Rest and Garnish: Once you remove the dish from the oven, let it rest on a wire rack for at least 10-15 minutes before serving. This crucial resting period allows the filling and sauce to set, preventing the shells from falling apart when you serve them. Just before bringing it to the table, garnish with a sprinkle of chopped fresh basil or parsley for a burst of color and fresh flavor.