Ingredients

2 tablespoons mayonnaise1 teaspoon Dijon mustard4 slices sourdough bread2 slices Swiss cheese2 slices cheddar cheese2 slices sweet onion1 medium tomato, sliced6 cooked bacon strips2 tablespoons butter, softened

Preparation

Combine mayonnaise and mustard; spread over 2 bread slices. Layer with cheeses, onion, tomato and bacon; top with remaining bread. Spread outsides of sandwiches with butter.

In a small skillet over medium heat, toast sandwiches until cheese is melted, 2-3 minutes on each side.