Ingredients
Beef Patties
- 500 g (1 lb) ground beef / beef mince
- 1 tsp salt
- 1 tsp black pepper
- 1 tsp garlic powder
Vegetables
- 2 onions, thinly sliced
- 250 g (½ lb) mushrooms, sliced
- 1 tbsp butter
- 1-2 tbsp Worcestershire sauce (optional)
Sandwich
- 8 slices bread
- 2 cups grated cheese (Gruyère and sharp cheddar)
- Butter (for toasting)
Instructions
- Shape Patties: Split the beef into 4 equal balls then flatten them with the palm of your hand to roughly the size of your bread slices.
- Season Patties: Season both sides of the patties generously with salt, black pepper, and garlic powder.
- Cook Patties: Heat a large skillet over medium-high heat and cook the patties for 5-6 minutes per side until deeply golden and cooked through. Remove from skillet and set aside.
- Caramelize Onions and Mushrooms: In the same skillet, melt 1 tablespoon of butter and add the thinly sliced onions and mushrooms. Cook on medium-low for 20-30 minutes until onions are deeply caramelized and both vegetables are soft and silky. Add Worcestershire sauce during cooking if desired. Adjust heat to prevent burning.
- Assemble Sandwiches: Layer each slice of bread with a cooked beef patty, a generous spoonful of the caramelized onion and mushroom mixture, and a few slices of grated cheese. Top with the second slice of bread.
- Butter and Cook Sandwiches: Butter the outsides of each sandwich. Cook in a clean pan over medium heat until golden brown on both sides and the cheese is melted, about 3-5 minutes per side. Covering the pan with a lid helps the cheese melt faster.
- Serve: Remove the patty melts from the pan, slice in half, and serve immediately while hot.
Notes
- Use good quality ground beef for best flavor.
- Caramelize onions and mushrooms slowly for maximum sweetness and texture.
- Gruyère and sharp cheddar give a perfect melty, flavorful cheese combination, but you can substitute with your favorite melting cheeses.
- Cover the pan when cooking the sandwiches to help melt the cheese quickly without over-browning the bread.
- Adjust seasoning on patties according to taste preferences.
- Worcestershire sauce is optional but adds a nice umami depth to the onions.
- Prep Time: 20 minutes
- Cook Time: 55 minutes
- Category: Sandwich
- Method: Frying
- Cuisine: American