1 loaf French bread
8 slices Swiss cheese
1/2 c. margarine, softened
1/4 c. chopped onion
1 Tbsp. prepared mustard
1 Tbsp. poppy seed
4 slices bacon, fried crisp and crumbled

Preheat oven to 400°. Slice bread into 16 slices, but not all the way through to the bottom. Cut cheese diagonally into halves. Place cheese between slices of bread. Place bread on a foil-covered baking sheet. Mix margarine, onion, mustard and poppy seeds. Spread mixture over the top and sides. Sprinkle with bacon. Bake 20 minutes.