1 stick butter
1 med. onion, grated
1 tbsp. mustard
Pepperidge Farm rolls
Swiss cheese, sliced
Thinly sliced ham

Melt butter in large skillet, add onion and mustard. Cook on medium low for a few minutes. Slice rolls open, dip inside layer of rolls in butter mixture then layer with ham and cheese. Put in oven at 300 degrees just until cheese melts.