Sliders are an American way of saying mini burgers. You can double these and make them regular sized burgers, they are just so much cuter this way! If you want to serve these with bread, I love using mini whole wheat pitas, but you can use whatever you wish. In the last minute or two of the burgers grilling, throw the bread on the grill too!
This is a great appetizer or side dish, and an amazing vegetarian and vegan dish. Feel free to add feta cheese or pulled salmon to add some calcium or protein.
I know the extra step of glazing the mushrooms seems annoying but I promise it is quick, relatively painless and so worth it!