Bagel Breakfast Casserole

Ingredients:

• Unsalted butter or nonstick cooking spray, for greasing the baking dish
• 2 cups whole milk
• 3/4 cup half-and-half
• Pinch of cayenne pepper
• 8 large eggs
• Kosher salt and freshly ground black pepper
• 1 1/3 cups crumbled cooked breakfast sausage
• 1 1/3 cups packed baby spinach
• 2 large plain bagels, split and cut into 1-inch pieces
• 1 1/3 cups shredded provolone
• 8 ounces cream cheese, cut into 1/2-inch cubes
• 2 tablespoons everything bagel seasoning

Source