Cheesy Tater Tot® Breakfast Casserole

Ingredients (12)

• ✓ cooking spray
• + 1 pound bacon add to pantry
• + 1 pound bulk pork sausage add to pantry
• + 3 ½ cups frozen bite-sized potato nuggets (such as Tater Tots®) add to pantry
• + ½ cup unsalted butter, melted add to pantry
• + 3 cups grated Colby-Jack cheese, divided add to pantry
• + 8 large eggs add to pantry
• ✓ 2 cups milk
• + 1 small onion, chopped add to pantry
• + 1 ½ tablespoons prepared yellow mustard add to pantry
• + salt and ground black pepper to taste add to pantry
• ✓ salt and ground black pepper to taste