In a saucepan, bring water and salt to a boil; slowly add grits, stirring constantly.
Reduce heat to medium-low; cover and cook for 5-7 minutes or until very thick; set aside.
In a skillet, cook and crumble sausage until browned; drain.
Add sausage and onion to grits; mix well.
Spoon into a greased 8-1/2-in.x 4-1/2-in.x 2-1/2-in.loaf pan.
Remove from pan; cut into 1/2-in.slices.
Roll slices in cornmeal.
Cook in a greased skillet until golden brown on both sides.