Preheat oven to 375 F

In a skillet over medium heat, add cooking oil or water and mushrooms, cook down until mushrooms begin to brown, stirring occasionally

Add the onion and cook until onions are translucent. Add garlic and stir until fragrant. Transfer to a large bowl

To the mushroom mixture, add breadcrumbs, oats, parsley, parmesan, oregano, rosemary, thyme, salt, pepper, and cayenne, and stir to combine.

Add eggs and mix well

Cover and refrigerate for at least 2 hours, or overnight

When ready, use your hands to form one inch balls from the mix. Place in a row on a parchment paper-lined baking sheet.

Bake for 20 minutes until golden brown, flipping half way