Ingredients

• 1 teaspoon butter
• 3/4 cup chopped Canadian bacon
• 6 cups sourdough bread, cut into 1 inch cubes (about 12 ounces)
• cooking spray
• 1 1/2 tablespoons spicy brown mustard
• 1/4 teaspoon salt
• 1/4 teaspoon fresh ground black pepper
• 4 large egg whites
• 2 large eggs
• 1 cup shredded swiss cheese (4 ounces)
• 1 1/2 cups vertically sliced onions
• 1 1/3 cups finely chopped red bell peppers
• 2 cups 1% low-fat milk