Ingredients:
3 tablespoons butter or 3 tablespoons margarine, softened
1 medium sweet onions, sliced and separated into rings
1 teaspoon brown sugar
8 slices pumpernickel bread
2 tablespoons stone ground mustard
8 slices muenster cheese
Directions:
Over medium-high, melt 1 tablespoon of butter in a 12-inch nonstick skillet.
Add the onion; cook stirring for 3-5 minutes, until tender.
Reduce to medium-low heat, adding in the brown sugar.
Cook until onion is glazed and golden, around 20-25 minutes, stirring occasionally.
While cooking, spread mustard over 4 slices of bread; place cheese slice on each piece of bread.
Spoon the onion mixture evenly over cheese and other bread slices.
Spread tops of sandwiches with 1 tablespoon of butter.
In skillet, over medium-low, heat until hot, placing buttered side down.
Spread remaining butter on other sides and cook until cheese has melted.
Serve warm.
Servings: 4
Time preparation: 15 min.
Time total: 30 min.