Oven Cheese And Spinach Fondue

10 sl White bread
6 Eggs
3 c Milk
1 t Dry mustard
1 t Salt
2 c American cheese -- shredded 8oz
3 tb Onion
1 pk Spinach -- frozen, drained

Heat ove to 325F. Remove crusts from bread and cut
into cubes. Beat eggs, milk and seasons. Stir in
bread cubes, cheese, onion and spinach. Pour into
lightly greased baking dish. Bake uncovered for 1
hour or until center is set. Serve immediately.