PREPARE sausage (*see note); BROIL on rack until brown on both sides; DRAIN thoroughly.
While sausage is broiling, in a large kettle, ADD water, oil and salt to water; bring to BOIL; when at a rolling boil, ADD spaghetti.
In the meantime, in medium saucepan over low heat, COMBINE spaghetti sauce and tomato sauce; COVER; SIMMER; ADD sausage when browned.
COOK spaghetti until done, about 12 to 15 minutes--test spaghetti for proper doneness by tasting a strand for "chewiness."
When ready, DRAIN spaghetti in colander; RETURN to kettle; STIR in margarine to keep strands from sticking together.
SERVE spaghetti topped with sauce and a garnish of Parmesan.
1. See recipe for homemade Spaghetti Sauce--extra tomato sauce needed only if using homemade recipe. 2. Sausage may be in casing or in bulk; for casing, cut into 3/4-inch rings; for bulk, roll into 3/4-inch balls.
Per Serving (excluding unknown items): 655 Calories; 27g Fat (35.9% calories from fat); 26g Protein; 81g Carbohydrate; 6g Dietary Fiber; 51mg Cholesterol; 2969mg Sodium. Exchanges: 4 Grain(Starch); 1 1/2 Lean Meat; 4 Vegetable; 4 Fat.