Cheesy-Pop Bread - cooking recipe

Ingredients

1 loaf white or rye bread
12 slices processed cheese
12 slices Swiss cheese
1 large chopped onion
1 c. margarine
mustard
poppy seed

Preparation

Saute onion until done.
Add butter and mustard.
Place cheese between bread slices.
Spread with some of sauce.
Spread rest of sauce over bread.
Sprinkle poppy seed over top.
Bake at 275\u00b0 about 45 minutes or until done.