Stuffed Philly Cheeseburger (YUM)

• 2 tablespoons butter
• 1 red onion, sliced
• 2 cups chopped mushrooms
• 12 teaspoon dried thyme
• 14 teaspoon salt
• 1 12 lbs beef
• 12 teaspoon salt
• 12 teaspoon pepper
• 4 slices sharp cheddar cheese
• 4 crusty rolls
• 4 leaves lettuce
• 1 tomatoes, sliced

1. filling: melt butter in skillet add onion cook 4min add mushrooms, thyme, and salt cook until liquid evaporates cool Burgers: divide meat into 8 portions shape into 3 1/2" patties spoon quarter filling in center and spreand leaving 1/2" border top with another patty and pinch together.
2. Flatten.
3. cover and chill in freezer 15minutes season sides with salt and pepper grill 6-8 minutes per side top with cheese during last 4 minutes grill rolls.
4. 2min serve burgers on rolls with lettuce and tomato.

butter, red onion, mushrooms, thyme, salt, beef, salt, pepper, cheddar cheese, crusty rolls, leaves lettuce, tomatoes

Taken from www.food.com/recipe/stuffed-philly-cheeseburger-yum-77778 (may not work)