Swiss Mushroom Burgerย
Swiss Mushroom Burger Ingredients: For the Burger Patties: 1 lb (450g) ground beef (80% lean) 1 tsp salt 1/2 tsp black pepper 1/2 tsp garlic powder 1/2 tsp onion powder 1 tbsp Worcestershire sauceย (optional) For the Mushroom Topping: 2 cups sliced mushrooms 1 tbsp butter 1 tbsp olive oil continued on next page