This Portobello Mushroom Burger is vegetarian, healthy, can be gluten free, and is topped with caramelized onions, a homemade basil pesto, and goat cheese!
*Some of the oil/vinegar will roll off the mushrooms and may start to smoke on the pan. Don't worry...it's totally normal!
**After the mushrooms were cooked, Trevor cut the mushrooms to fit the size of bun we have on hand. This isn't necessary, but makes for a really pretty presentation!
***Gluten free? Make sure to use a GF bun! :)