Infallible Souffle

Directions

1. 1
   Remove crusts from bread; cut in half.
2. 2
   Grease a 9 x 13-inch glass casserole dish.
3. 3
   Layer bread, ham, Cheddar cheese and Swiss cheese.
4. 4
   Repeat layers.
5. 5
   Combine and pour over the casserole the following:
6. 6
   dry mustard, eggs, onion salt and milk.
7. 7
   Put few pats of butter on top before baking.
8. 8
   Can be made the day before and refrigerated.
9. 9
   Bake at 375° for 40 minutes or longer, if necessary, depending on your oven heat.
10. 10
    Serves 10.