These Roasted Mushroom Swiss burgers are the best! Loaded with mushrooms for a hearty, earthy taste, flavored with garlic, onions, and spices, and bound with beans and quinoa. Then topped with a melty swiss cheese and garlicky mayo, and served on a delicious pretzel bun. A great healthy alternative to burger night!
Preheat the oven to 350 degrees and line a baking sheet with parchment paper. Roast sliced mushrooms for 10 minutes, then remove from oven and let cool.
While mushrooms are roasting, sauté shredded onion and garlic cloves for 1-2 minutes in 1 tsp. olive oil over medium heat. Remove from heat, place in a large bowl, and allow to cool slightly before handling. Add mushrooms to the bowl.
Add remaining ingredients to the mushroom/onion/garlic mixture and combine well.
Form the mixture into individual patties (you should have about 6-8 burgers depending on how big you make them.) Place the mushroom burgers on a parchment lined baking sheet.
Brush the tops of the mushroom burgers with olive oil
Place the mushroom burgers into the oven and roast them at 400 degrees for 12-15 minutes. Flip burgers and brush the other side with oil.
Bake burgers for another 8 minutes or until lightly browned on top.
Add the swiss cheese slices and roast for 1-2 minutes more, until the swiss cheese is slightly melted.
Serve on a toasted bun (we prefer pretzel buns!) with garlic mayo and the toppings of your choice!
For The Garlic Mayo
Whisk the mayo, garlic, lemon juice, and oil together in a small bowl.
Add salt and pepper to taste.
Notes
Roasting the mushrooms in advance is an important step as it helps to dry them out a little bit. This leaves them with their rich mushroom flavor, but they won't be as watery and will hold together in the burger much more easily.