Created by TBones on January 9, 2015
Step 1: Cook bacon until crispy in a skillet. Remove to plate, leave some fat in skillet.
Step 2: Add in onion slices to hot bacon fat, cook until softened, about 4 minutes; remove to a bowl. Add mushrooms to the skillet then add wine and 2 tablespoons water. Cook and stir until mushrooms are soft and liquid has evaporated, about 5 minutes.
Step 3: Lay 2 bread slices flat, and top one slice with cheese, roast beef, onion, and mushrooms.
Step 4: Break 2 bacon slices in half and place over mushrooms. Top with remaining bread slices Spread the top and bottom bread slice with some soft butter.
Step 5: Wipe the skillet. Place sandwich in the skillet, buttered side down. Cook until lightly browned, about 2 minutes per side, pressing down with a spatula to seal.