Vegetarian Skillet Stuffed Shells
I had been craving Italian food for a while, so I was excited when I stumbled upon a vegetarian skillet stuffed shells recipe on Epicurious. It was a fairly easy recipe to make and called for ingredients I had on hand. I stayed close to the original recipe, although I substituted cottage cheese for ricotta, added some mozzarella, and baked them in the oven for the last few minutes instead of on the stovetop. I liked that the recipe was healthier and didn’t use a ton of cheese on top. I served these shells with a light, delicious salad and freshly baked bread for a tasty dinner, which my whole family enjoyed.
Vegetarian Skillet Stuffed Shells
Ingredients:
- 15-18Â jumbo pasta shells
- 2 tbsp olive oil
- ½ lb cremini mushrooms, sliced thinly
- Sea salt and freshly cracked pepper, to taste
- ½ cup dry white wine
- 5 oz baby spinach, chopped
- 2 tbsp butter
- 6Â cloves of garlic, thinly sliced
- Pinch of crushed red pepper flakes
- 1 jar marinara sauce (my jar was 32 oz – about 4 cups)
- 2 cups whole milk, small-curd cottage cheese (or ricotta)
- ¾ cup Parmesan, finely grated, plus more for serving
- ½ cup mozzarella, shredded
- ½ tsp dried oregano
- Fresh parsley, chopped for serving
How to Make Vegetarian Skillet Stuffed Shells:
Preheat the oven to 375 degrees.
Cook the shells in a large pot of well-salted boiling water according to the package instructions, stirring occasionally, until al dente, then drain.
Place the separated shells on a baking sheet until needed. Side Note: Don’t overcook the shells–they will finish cooking in the sauce.
Meanwhile, heat the oil in a large ovenproof skillet over medium-high heat. Add the sliced mushrooms and cook, stirring occasionally, until they release their juices and are golden brown, about 5-6 minutes. Season with sea salt and freshly cracked pepper to taste.
Add the wine and cook, stirring often, until reduced by half, 2 minutes. Add the spinach and cook, stirring constantly, until it is wilted and most of the liquid has evaporated, about 4 minutes. Pour mixture into a large bowl and set aside.
Heat the butter in the same ovenproof skillet over medium-high heat. Add the sliced garlic and crushed red pepper flakes and cook, stirring constantly, for 1-2 minutes until fragrant and softened. Add the marinara sauce and bring to a simmer over low heat. Cook, stirring occasionally, until warmed through, about 4-5 minutes.
While the sauce simmers, add the cottage cheese (or ricotta), Parmesan, mozzarella, and oregano to the bowl with the mushroom mixture; stir until combined. Taste and re-season with sea salt and freshly cracked pepper to taste.
Spoon 2 tablespoons of the cheese mixture into each shell–do not overstuff the shells.
Nestle the stuffed shells into the simmering sauce.
Cover with a lid and bake for 20 minutes. Remove the lid and continue cooking for 5 minutes.
Remove from the oven.
Serve with fresh parsley on top and Parmesan on the side. Enjoy.

Equipment
- Ovenproof Large Skillet with Lid
Ingredients
- 15-18 jumbo pasta shells
- 2 tbsp olive oil
- ½ lb. cremini mushrooms, sliced thinly
- Sea salt and freshly cracked pepper, to taste
- ½ cup dry white wine
- 5 oz baby spinach, chopped
- 2 tbsp butter
- 6 cloves of garlic, thinly sliced
- Pinch of crushed red pepper flakes
- 1 jar marinara sauce (my jar was 32 oz - about 4 cups)
- 2 cups whole milk small curd cottage cheese (or ricotta)
- ¾ cup Parmesan, finely grated plus more for serving
- ½ cup mozzarella, shredded
- ½ tsp dried oregano
- Fresh parsley, chopped for serving
Instructions
- Preheat the oven to 375 degrees.Â
- Cook the shells in a large pot of well-salted boiling water according to the package instructions, stirring occasionally, until al dente, about 9 minutes. Drain. Place the separated shells on a baking sheet until needed. Side Note: Don't overcook the shells–they will finish cooking in the sauce. Â
- Meanwhile, heat the oil in a large ovenproof large skillet over medium-high heat.Â
- Add the sliced mushrooms and cook, stirring occasionally, until they release their juices and are golden brown, about 5-6 minutes. Season with sea salt and freshly cracked pepper to taste.Â
- Add the wine and cook, stirring often, until reduced by half, 2 minutes.Â
- Add the spinach and cook, stirring constantly, until it is wilted and most of the liquid has evaporated, about 4 minutes. Pour the mixture into a large bowl; set aside.
- Heat the butter in the same ovenproof large skillet over medium-high heat.Â
- Add the sliced garlic and crushed red pepper flakes and cook, stirring constantly, for 1-2 minutes until fragrant and softened.Â
- Add the marinara sauce and bring to a simmer over low heat. Cook, stirring occasionally, until warmed through, about 4-5 minutes.Â
- While the sauce simmers, add the cottage cheese (or ricotta), Parmesan, mozzarella, and oregano to the bowl with the mushroom mixture; stir until combined. Taste and re-season with sea salt and freshly cracked pepper to taste.
- Spoon 2 tablespoons of the cheese mixture into each shell. Do not overstuff the shells.Â
- Nestle the stuffed shells into the simmering sauce. Cover with a lid and bake for 20 minutes.Â
- Remove the lid and bake for 5 minutes.Â
- Remove from the oven.
- Serve with fresh parsley on top and Parmesan on the side. Enjoy.Â






That looks like a fabulous meatless meal!
Great looking dish! I love skillet dinners — easy to make, and less trouble (to me, at least) than a sheet pan dinner. Plus did I say easy? 🙂 This looks terrific — neat recipe. Thanks!
Delicious. Great recipe for shells.
I have never seen jumbo shells here, pity as I really like the sound of this recipe. Have a good day Diane
I love stuffed shells! Definitely going to try this filling next time I make them.
Love stuffed shells. I do put spinach in mine but never thought about mushrooms…sounds great.
I don’t see marinar sauce in the recipe. Am I missing something?
Terry,
Thanks for pointing that out! I have corrected the recipe.
-Pam
I would love to make this recipe next time my daughter in law comes to visit. She is a pasta lover and this recipe looks amazing. Thanks for the easy step by step instructions.