Cheesy Bread Pudding

Ingredients

• 1/2 cup butter or margarine
• 10 slices white bread cut into 1-inch cubes
• 3 cups shredded Cheddar cheese
• 2 cups milk
• 3 eggs, separated
• 1/2 tsp salt
• 1/2 tsp dry mustard
• 1/2 tsp red pepper