Grease 9 x 13 baking dish. Pour melted butter on bottom. Place 1/2 of cubed bread on top of butter. Cover with meat and cheese. Top with remaining bread. Combine eggs and milk and pour over bread, covering all of the cubes. Cover and refrigerate overnight — or at least 4 hours. Bake at 350 degrees for 1 hour or until knife inserted in center comes out clean.