Heat oven to 400o.
Cook and stir sausage until brown. Drain.
Mix baking mix and water until soft dough forms. Pat dough in bottom and up sides of 13 x 9 x 2-inch ungreased pan.
Spoon sausage over crust. Sprinkle with potatoes and cheddar cheese.
Beat eggs, milk, salt, and pepper; pour over top. Sprinkle with parmesan cheese.
Bake until crust is golden brown and eggs are set - approximately 20-25 minutes.