1 can (8 oz.) tomato sauce
1/4 c. brown sugar
1/4 c. vinegar
1 tsp. mustard
1 egg, lightly beaten
1 med. onion, minced
1/4 c. cracker crumbs
2 lbs. ground beef
1 1/2 tsp. salt
1/4 tsp. pepper

Combine tomato sauce, brown sugar, vinegar and mustard in a small bowl; set aside.

Combine egg, onion, cracker crumbs, ground beef, salt and pepper in a bowl. Add 1/2 cup of tomato mixture and blend thoroughly. Shape into oval loaf and place in an oblong micro-proof baking dish. Make a depression on top of loaf. Pour remaining tomato sauce on top.

Cook, uncovered, on 70% (roast) for 25 or 30 minutes or until center is cooked. Cover meat and let stand about 10 minutes before serving.