Swiss Mushroom Patty Melt 🍔🧀 Ingredients: 1 lb ground beef (80/20 blend for juiciness) 1 tbsp Worc...

Swiss Mushroom Patty Melt 🍔🧀
Ingredients:
1 lb ground beef (80/20 blend for juiciness)
1 tbsp Worcestershire sauce
Salt and black pepper to taste
1 tbsp olive oil
1 cup mushrooms, sliced
1 medium onion, thinly sliced
4 slices Swiss cheese
4 slices rye or sourdough bread
2 tbsp butter (for grilling the bread)
1/4 cup mayonnaise (optional)
1 tsp Dijon mustard (optional)
Instructions:
Prepare the patties: In a bowl, mix the ground beef with Worcestershire sauce, salt, and black pepper. Gently...