These Italian Vegetarian Stuffed Mushrooms are a great make-ahead recipe for dinner or an appetizer! They're packed with flavor from the fresh herbs, shallots, garlic, and parmesan cheese.
Gently wipe off any excess dirt from the mushrooms with a clean kitchen or paper towel. Don't wash them with water, as this will affect their texture.
Remove the stems from the mushrooms. Cut off and discard the tough ends. Finely chop the stems.
Heat a skillet (I used nonstick) over medium heat. Add 2 tablespoons olive oil.
Add the shallots, garlic, mushrooms, and parsley to the skillet with a pinch of salt. Cook until ingredients are softened, stirring occasionally, about 5-7 minutes.
In a medium bowl, mix the sautéed mushroom mixture with the breadcrumbs, parmesan cheese, oregano, and salt + pepper to taste.
Place the mushrooms in a baking dish. Stuff them with the mixture, pressing down to get as much in as possible. Use ALL the stuffing- some of it may not fit and fall off the sides, this is OK!
Drizzle the remaining two tablespoons olive oil on top of the stuffed mushrooms.
Cover the baking sheet with foil. (At this point, you can refrigerate the mushrooms for up to a day to be baked later.)
Bake at 375 degrees for 20 minutes. Remove foil and bake 10-15 more minutes, until mushrooms are golden and bubbling.
Serve hot or warm.
Notes
Make it vegan: omit the parmesan cheese and add a little more salt, or use a vegan cheese.
Make it ahead: Assemble the stuffed mushrooms without baking up to 24 hours in advance, then bake as directed when you are ready.
Parmesan cheese may not be suitable for strict vegetarian diets, since it traditionally uses animal rennet as an ingredient. You can sometimes find vegetarian suitable parmesan cheese (or gruyere) that uses microbial enzymes or vegetable rennet- just make sure to read the label on the package.
The provided nutrition information does not include any added sodium from seasoning to taste, any optional ingredients, and it does not take brands into account. Feel free to calculate it yourself using this calculator or by adding the recipe to Yummly.