INGREDIENTS
•
32 ounces lean ground beef
•
½ cup favorite steak sauce
•
½ cup herb and garlic bread crumbs
•
1 egg
•
1 teaspoon salt
•
2 large sweet onions, sliced thin
•
8 ounces sliced button mushrooms
•
1 tablespoon butter
•
½ teaspoon salt
•
6 slices Muenster cheese