mix the egg with spaghetti and grated cheese (I use the grate cheese out of the cannister that you sprinkle on your spaghetti)
spray a pie plate with pam spray and then put spaghetti mix into pie plate. Spread leftover sauce over top then cover with meat (you can use different meats if you'd like) then put the mozzarella cheese on then pepperoni.
Cook at 350 approx. 40 min. though use your own judgement according to how much spaghetti you use.