Marvelous Stuffed Shells with Mascarpone, Ricotta, and Spinach

Sneak Preview: Mascarpone cheese is the secret ingredient in these delectable Stuffed Shells with Mascarpone, Ricotta, and Spinach, making this vegetarian entrée incredibly rich, flavorful, and decadent.

CHEESY SPINACH AND MUSHROOM STUFFED SHELLS--ready to eat in a casserole dishPin

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For a while, no-meat or meatless Mondays were quite popular. Arbitrary rules like that don’t work for me, but the occasional meatless meal is a nice change. Do you enjoy a meal without meat? If so, this recipe is for you.

The most challenging part of this recipe? Finding the ingredients—but don’t let that stop you! I’ve got some tips to help. You probably already have one key ingredient, which likely led you here. So, you’re off to a great start.

  • The trickiest item to find might be the jumbo shells. I usually have luck at Kroger, but if you’re stuck, try looking online.
  • Next up is Mascarpone cheese. You’ll find it in the deli section, not with the usual Cheddar and Mozzarella.
  • Once you’ve got everything, assembling this dish is a breeze—easier than lasagna, in my opinion.

The easiest part, of course, is eating it.

And the best part? Enjoying the gooey cheese, rich Mascarpone, flavorful spinach and mushrooms, all nestled in pasta shells and topped with your favorite marinara. Who could resist?

Happy Bakers Speak Up

“I can say this was spectacular! It made enough for me to offer some to my mother in law and a few for leftovers on this back to school night!!!” LISA


Ingredients and Substitutions

  • JUMBO SHELLS:
    • Substitute manicotti. Different look, similar taste
  • BUTTER:
    • Sub margarine or vegetable oil
  • MUSHROOMS:
    • Fresh mushrooms recommended
  • SPINACH: 
    • Substitute a 10-ounce package of frozen spinach
      • Cook as directed; squeeze the water out completely
  • GARLIC:
    • Fresh garlic = the most flavor.
    • Bottled garlic is another choice
  • RICOTTA CHEESE:
  • MASCARPONE CHEESE:
    • Mascarpone makes this recipe special.
    • Creme Fraiche is the best substitute, or
    • Cream cheese with some sour cream to lighten the texture
  • PARMESAN CHEESE:
    • Sub Romano cheese
  • MOZZARELLA CHEESE: 
    • Essential “glue” for the filling
  • MARINARA OR SPAGHETTI SAUCE:
    • Your favorite bottled sauce
    • Or make it from scratch

Variations:

  1. Add chicken or Italian sausage for extra protein and flavor. Ground beef is also a good option.
  2. Skip the spinach and mushrooms if they’re not your favorite, and rename the dish “Four-Cheese Stuffed Shells.”

📌Kitchen Secret📌 for Stuffing the Shells

Cooked shells stuffed with cheese are almost ready to bake.Pin
After boiling, the shells are easy to stuff. Use surgical gloves if messy mixtures gross you out.

Shells with cheese on top before baking.Pin
Grate the Mozzarella and Parmesan for better melting.

Happy Cooks Speak Up

“I made these tonight, and you were right, I had to go to two stores before I could find the shells…I doubled the recipe because I only have 8×11 dish pans and I wanted to freeze some for later (not realizing how much this made…we got through half a pan with a family of 5)… anyway, I inadvertently used only one 8 oz mascarpone for both batches combined…but it still came out DELICIOUS!! Thanks again for posting such yummy things! I have a hard time trusting cookbooks, but I know when I pick something off of your aite to make, it’s going to be awesome! Thanks again! “–JULIE


Parting Thoughts: I’m not a big pasta girl, so that’s a clue that any pasta recipe you find on my website is good. This Cream Cheese Baked Spaghetti has ingredients that are easier to find if you don’t have good luck gathering what you need for this recipe.


Help at Your Fingertips: For questions or suggestions, email Paula at saladinajar.com. If you need help, I’m happy to troubleshoot via email (faster than leaving a comment). Attach pictures and as many details as possible for the best advice.

cheesy spinach and mushroom stuffed shells in a serving dish ready to eat.Pin
Yield: 6 servings

Stuffed Shells with Mascarpone, Ricotta, and Spinach

These Stuffed Shells are filled with Mascarpone, spinach, mushroom, ricotta, Mozzarella, and Parmesan cheese.
5 from 2 votes
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Prep time: 40 minutes
Cook time: 35 minutes
Total time: 1 hour 15 minutes

Ingredients
 

  • ½ box jumbo shells
  • ½ tablespoon butter
  • 4 ounces fresh mushrooms chopped
  • 6 ounces fresh baby spinach small bag
  • 1 clove garlic crushed
  • 1⅓ cup ricotta cheese
  • 8 ounces Mascarpone cheese
  • 1 cup Parmigiano Reggiano cheese shredded and divided
  • 8 ounces Mozzarella cheese shredded and divided
  • Salt and pepper to taste
  • 1 24-ounce jar marinara or spaghetti sauce
  • 2 tablespoons water

Instructions

  • Cook shells in boiling water for 9 minutes. Stir several times to keep them from sticking to the bottom. Drain and place on a cookie sheet to cool.
  • Meanwhile, melt butter in a large skillet and add mushrooms. Saute until browned. Remove from pan to medium mixing bowl. Add spinach and garlic to a hot skillet and saute until wilted. Drain well in a colander, pressing with the back of a spoon to remove as much moisture as possible. Chop and add to mushrooms.
  • Combine ricotta, Mascarpone, half of the Parmesan, and half of the Mozzarella with spinach and mushrooms. Season with salt and pepper.
  • Fill each shell with spinach and mushroom and cheese mixture.
  • Add water to half of the prepared sauce and pour it into the bottom of a 9 x 13-inch dish. Place shells on top of the sauce, open side up.
  • Pour the remaining sauce over the top of the shells. Sprinkle remaining Mozzarella and Parmesan over shells
  • Bake at 400˚F for 30 minutes.

Notes

How to make this a freezer meal:  Prepare as directed, then double wrap and freeze for up to six weeks. Thaw in the refrigerator overnight, then cover with foil and bake for 20 minutes. Uncover and bake until the cheese browns.

Nutrition

Serving: 1 | Calories: 569kcal | Carbohydrates: 27g | Protein: 28g | Fat: 38g | Saturated Fat: 24g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Trans Fat: 0.04g | Cholesterol: 109mg | Sodium: 604mg | Potassium: 386mg | Fiber: 2g | Sugar: 2g | Vitamin A: 3846IU | Vitamin C: 9mg | Calcium: 590mg | Iron: 2mg

All images and text ©️ Paula Rhodes for Salad in a Jar.com

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5 from 2 votes (2 ratings without comment)

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15 Comments

  1. I love this recipe. I have made it several times. I add a 2 ounce bag of pine nuts to the ricotta and spinach mixture. It gives it a nice, unexpected crunch. Thanks for all of your great recipes.

    1. I’m so glad you wrote, Patti. Gotta try your idea with the pine nuts. Genius! Thank you for your kind words. Have a great week.

  2. I can say this was spectacular! It made enough for me to offer some to my mother in law and a few for leftovers on this back to school night!!! And I’m *very* excited about your next post about ricotta cheese from yogurt whey!! Since I saved mine from the last batch earlier this week!

    1. Watch for ricotta cheese this weekend.

  3. Mushrooms Canada says:

    This recipe is just too amazing! Flavours we all love with a more simplistic take. Thanks for sharing!!

    -Shannon

  4. These are on the menu for next week. I’ll definitely be adding Sweet Italian Sausage since my husband pouts when I give him meatless dinners. =)

  5. Sandy Coughlin says:

    This would be perfect for a dinner party! I’ll definitely have to try it. Thanks!

    1. Sandy,
      I agree. This dish is company-worthy and fairly rich so you wouldn’t want to be eating it every day. 🙂

  6. I made these tonight, and you were right, I had to go to two stores before I could find the shells…I doubled the recipe bc I only have 8×11 dish pans and I wanted to freeze some for later (not realizing how much this made…we got through half a pan with a family of 5)… anyway, I inadvertently used only one 8 oz mascarpone for both batches combined…but it still came out DELICIOUS!! Thanks again for posting such yummy thungs! I have a hard time trusting cookbooks, but I know when I pick something off of your aite to make, it’s going to be awesome! Thanks again!

  7. OMG! This looks delish! I’m going to the store later, so this will definitely be on my grocery list! Thanks!

  8. Paul: I love stuffed shells and this looks delicious! Great recipe as is or as a springboard for adding more “stuff” (couldn’t resist the pun) such as sausage. As always…beautiful pics.

  9. My husband would love these just as they are and I would love them stuffed with bits of chicken. Great that this is freezable! Perfect for taking to a friend/neighbour in need 🙂

  10. Looks tasty! Have you tried making your own mascarpone? It’s on our list to try because its so expensive. I’m looking forward to your post on ricotta from whey. We’ve tried making ricotta from the whey left after making mozzarella without much success.

    1. Hey Gina,
      Haven’t tried making mascarpone. I don’t need to be eating this stuff very often so the price is worth the occasional treat. Also haven’t tried making Mozzarella. Would love to try yours.

      1. I used my mom’s Matfer strainer making mozzarella earlier this week, and finally decided to break down and get one. Ordered it tonight and will have it by Tuesday. I tried straining my yogurt a couple of weeks ago to see if I liked it better, and it was really good. Thanks for all the good advice!