1 loaf Vienna bread
1/2 lb. Swiss cheese, sliced

STIR TOGETHER:
1 to 2 sticks margarine or butter, melted
1/2 tsp. lemon juice
1 to 2 cans mushrooms
2 T. onion, finely chopped
1 T. dry mustard
1 to 2 T. poppy seeds
1 tsp. seasoning salt

Put a big piece of foil on a cookie sheet and place sliced bread on that. Stuff each slice with mushrooms and cheese. Spoon butter mixture into each slice. Pour remaining over top of entire loaf. Wrap foil over top of loaf. Bake at 350º for 30 to 40 minutes. Open foil for last 10 minutes.