In a medium bowl, combine the oats, bread crumbs, mushrooms, Parmesan cheese, onion, parsley, garlic powder, oregano, salt, and pepper. Mix until well blended.
In a separate bowl, whisk together the vegetable broth and egg whites. Pour the mixture over the oat mixture and stir until blended.
Form the mixture into 1-inch balls and place on a lightly greased baking sheet.
Bake for 20 to 25 minutes, or until lightly browned.
Interesting Facts
Meatless meatballs are a great way to add more plant-based protein to your diet.
You can make this recipe in advance and freeze the meatballs for later use.
These meatballs can be served over pasta, on a sandwich, or with a side of vegetables.