To punch up flavor, use one pound of mild sausage and one pound of hot sausage in this grits and sausage casserole. If you're really brave, use hot sausage exclusively!
Brown sausage in a large skillet, stirring until it crumbles. Drain well, and set aside.
Bring water to a boil in a large saucepan, and stir in grits. Return to a boil; cover, reduce heat, and simmer 5 minutes, stirring occasionally. Remove from heat; add cheese and next 3 ingredients, stirring until cheese melts. Stir in sausage and eggs.
Spoon mixture into a lightly greased 13" x 9" x 2" baking dish; sprinkle with paprika. Bake, uncovered, at 350° for 1 hour or until golden and heated. Let stand 5 minutes before serving. Garnish, if desired.
Make-Ahead: Prepare grits mixture as directed above, but do not bake. Cover and chill overnight. Remove from refrigerator; let stand, covered 30 minutes. Uncover and bake as directed.