Classic Mushroom Swiss Patty Melt (Print Version)

# Ingredients:

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01 - 1 lb ground beef
02 - Salt and pepper to taste
03 - 1 tbsp olive oil
04 - 1 cup sliced mushrooms
05 - 1 small onion, thinly sliced
06 - 4 slices Swiss cheese
07 - 4 slices rye bread
08 - 2 tbsp unsalted butter

# Instructions:

01 - Season the ground beef with salt and pepper. Form into 2 patties. In a skillet, cook the patties over medium heat until browned on both sides and cooked to your desired doneness. Remove and set aside.
02 - In the same skillet, add olive oil. Sauté the mushrooms and onions until softened and golden brown. Remove and set aside.
03 - Layer each slice of rye bread with a beef patty, sautéed mushrooms and onions, and a slice of Swiss cheese. Top with another slice of rye bread.
04 - In the skillet, melt butter over medium heat. Grill the sandwiches until golden brown on both sides and the cheese is melted.
05 - Slice the sandwiches in half and serve warm.

# Notes:

01 - Can substitute any cheese of your choice
02 - Best served immediately while warm