A delicious burger featuring a juicy 8 oz patty topped with sautéed mushrooms, grilled onions, Swiss cheese, and horseradish garlic mayo, all served in a toasted onion roll.
1: Cook the burger patty until juicy and cooked through.
2: Sauté mushrooms and onions until caramelized.
3: Assemble the burger with Swiss cheese and horseradish garlic mayo between the toasted onion roll.
4: Serve hot.
