Trim crust from bread and cut into 1 1/2 inch slices. Cut each slice into cubes. In mixer, blend the cheese and butter. Add onion powder and Tabasco. Spread mixture on all sides of bread like an iced cake. Put them on waxed paper on a cookie sheet and freeze. When frozen, put in plastic bags. Bake at 400 degrees for about 10 minutes or until brown.