Surprise Sandwiches

Ingredients:
- 12 slices bread
- American cheese slices
- prepared mustard
- any of the following: ground ham, tuna, salmon, diced chicken or turkey
- 4 eggs, beaten
- 3 1/2 c. milk
- 1/2 tsp. salt
- mushroom sauce (cream of mushroom soup diluted with cream or whole milk)

Directions:
- Prepare the night before.
- Grease an 8 x 10-inch pan with butter or oleo.
- Place 6 slices of bread (crusts removed) in bottom of pan.
- Cover each slice with a slice of American cheese. Then spread each with prepared mustard and cover with any of the listed meats.
- Butter 6 more slices of bread and place on top, buttered side up.