Prepare grits according to package instructions. Add butter. Mix in cream of celery soup. Sauté sausage until well done, drain and mix in to grits. Add 1 cup of cheese, garlic powder, salt and pepper. Mix well. Pour into 13x9" baking dish. Sprinkle with remaining cheese. Bake at 350º until cheese melts and grits are bubbly.
Notes: If grits appear to be too thick, thin them with a little water or milk before adding the other ingredients