Cook sausage in skillet until browned - drain. Seperate the crescent rolls, press and form crust on bottom of 9 x 13 pan. Spoon sausage over the crust. Put potatoes on top of sausage. Top with the cheddar/jack cheese. In a bowl beat together eggs, milk, salt and pepper and pour over cheese. Sprinkle with parmesan. Bake at 375 degrees for 30 minutes. Be sure eggs are cooked in center. YUMMY!!!