Overnight Breakfast Casserole

Bahan-bahan (12 porsi)

• 12 slices thick sliced bread (cubed, about 14 cups)
• 12 slices bacon (cooked and crumbled, or 1 cup diced ham)
• 3 g reen onions (thinly sliced)
• ½ red bell pepper (finely diced)
• 4 cups shredded cheddar cheese
• 6 large eggs
• 3 cups milk
• ½ teaspoon dry mustard powder
• ½ teaspoon salt
• ½ teaspoon black pepper