Ingredients for - Vegetarian Mushroom Meatballs

1. Olive oil, or as needed 1 tablespoon
2. Onion, chopped 1 medium
3. Mushrooms, finely chopped 2 (10 ounce) packages
4. Garlic, minced 4 cloves
5. Quick-cooking oats 1 cup
6. Bread crumbs 1 cup
7. Chopped fresh parsley ½ cup
8. Eggs 2
9. Vegetable broth 3 tablespoons
10. Dried oregano ½ teaspoon
11. Dried thyme ½ teaspoon
12. Salt ¼ teaspoon
13. Ground black pepper ¼ teaspoon
14. Marinara sauce (such as Ragu®) 1 (24 ounce) jar
15. Grated Parmesan cheese (Optional) ⅓ cup
16. Chopped fresh parsley, or to taste 1 teaspoon

How to cook deliciously - Vegetarian Mushroom Meatballs

1 . Stage

Heat oil in a large skillet over medium-low heat. Saute onion in the hot oil, about 7 minutes. Add mushrooms, increase heat to medium-high, and cook and stir until water evaporates and they brown nicely, 10 to 15 minutes. Stir in garlic and transfer mixture into a mixing bowl; let cool.

2 . Stage

Stir oats, bread crumbs, 1/2 cup parsley, eggs, broth, oregano, thyme, salt, and pepper into the mixture to combine. Cover with plastic wrap. Refrigerate for flavors and texture to develop, at least 2 hours, to overnight.

3 . Stage

Preheat the oven to 400 degrees F (200 degrees C). Grease a rimmed baking sheet lightly.

4 . Stage

Form small balls from the mixture using a tablespoon as a measure. Place on the prepared baking sheet.

5 . Stage

Bake in the preheated oven until browned, about 15 minutes.

6 . Stage

Meanwhile, heat marinara sauce in a medium saucepan over medium-low heat. Remove meatballs from the oven and transfer to the sauce; cook over low heat for 15 minutes more. Garnish with Parmesan cheese and/or 1 teaspoon parsley.