Preheat the oven to 350 degrees
Spray a 9x13 3 Quart dish well with cooking spray
Cut each biscuit into 8 pieces
Lay the biscuits out in the bottom of the glass baking dish
Sprinkle cooked sausage over biscuits
Sprinkle cheese over biscuits and sausage
Combine eggs and milk, beat well (I remove all of the slimy chalazae out of the eggs - personal preference)
Pur egg mixture over casserole
Combine gravy packet and water well
Pour over entire casserole
Cover casserole entirely with foil
Bake in preheated oven for 50 minutes
Remove foil and broil to get the browned look for three to five minutes
** Be sure to stay close to the oven o make sure it doesn't get burnt
Let the casserole sit for five minutes or so
Serve and enjoy!