Grease a 9x13 baking dish. Cut the biscuits into quarters and place them in the dish.
Sprinkle the cooked sausage and shredded cheese over the biscuits.
In a bowl, whisk together the eggs and milk. Pour this mixture over the biscuits and sausage.
Cover the dish tightly with foil and refrigerate overnight.
In the morning, preheat the oven to 350 degrees Fahrenheit. Bake covered for 30 minutes.
Remove the foil, pour the prepared gravy over the top, and bake for another 15 minutes until the eggs are set.