Slice, French Bread Horizontally into 2 large pieces - combine margarine, mustard, onion and poppy seeds - spread on both pieces of bread and top with the chhse slices. - place each slice in a foil boat, leaving top open, and then sprinkle the bacon across the top. Bake at 375 for 15 minutes , Take bread out of foil and cut into serving pieces. Enjoy !!