Everything Bagel Breakfast Casserole

Bahan-bahan (10 porsi)

• 6 leftover everything bagels
• 6 ounces cooked ham (bacon, or sausage, cut or crumbled into small pieces)
• 3/4 cup freshly grated sharp cheddar cheese (divided)
• 8 large eggs
• 2 1/2 cups milk
• 1 teaspoon ground mustard
• 1/2 teaspoon kosher salt
• 1/4 teaspoon ground black pepper
• 2 tablespoons chopped fresh chives (plus additional for sprinkling on top)
• 8 ounces reduced-fat cream cheese (or regular cream cheese; do not use fat free)