8 slices bread, cubed (after crusts are removed)
1 can Spam or 1 lb. cubed ham
1 c. shredded Velveeta cheese
8 eggs, lightly beaten
2 2/3 c. milk
1 tsp. dry mustard

Butter a 9 x 13 inch glass baking dish. Place bread cubes on bottom. Cover with meat. Sprinkle cheese over all. Combine eggs, milk, and mustard. Pour evenly over cheese. Cover and refrigerate overnight. Bake, uncovered, in 350 degree oven for 45 minutes. Let sit 10 minutes before cutting.