This make-ahead overnight tater tot breakfast casserole is a delicious and convenient dish to serve for breakfast or brunch. It features crispy tater tots, savory sausage, eggs, and cheese, all baked together to create a hearty and satisfying meal. The casserole can be prepared the night before and refrigerated overnight, allowing the flavors to meld together. In the morning, simply pop it in the oven and bake until golden and bubbly. Serve this flavorful casserole with a side of fresh fruit or a green salad for a complete breakfast spread.