Cut 12 white bread slices into donuts, holes and scraps (or slice into squares). Put scraps on bottom of 9"x13" baking dish. Layer 12 ounces sharp processed cheese slices and 10 ounces frozen of fresh chopped broccoli and 2 cups chopped cooked ham. Put donuts and holes on top of layers and pour a mixture of 3 1/2 cups milk, 6 eggs, 2 tablespoons chopped dry onion, 1/2 teaspoon salt, 1/4 teaspoon dry mustard on top of strada. Refrigerate 6 hours minimum. Bake 55 minutes at 350 degrees.