1 package frozen broccoli, 10 ounces or about 1 1/2 cups chopped
4 slices cooked ham
1/2 cup shredded cheddar cheese
2 cups white sauce, link to recipe below
2 teaspoons dry mustard
1/2 teaspoon salt
1 tablespoon minced onion
Cook broccoli until almost tender; place in buttered casserole. Top with sliced ham. Make white sauce and add cheese to thickened sauce; cook over low heat until cheese has melted. Add remaining ingredients to the sauce; pour over ham and broccoli. Bake casserole at 400° for 20 to 25 minutes.