1 1/2 lb. lean ground beef
1 egg
3/4 c. cracker crumbs
1/2 c. finely chopped onion
2 (8 oz.) cans tomato sauce with cheese (or pizza sauce)
1 tsp. salt
1/2 tsp. oregano
1/8 tsp. pepper
2 c. shredded Mozzarella cheese

Measure all the ingredients into a large bowl, using only 1/3 cup of the tomato sauce. Mix thoroughly with a fork. Turn out onto a piece of waxed paper and shape into a rectangle 1 inch thick. Spread shredded cheese evenly over mixture. Roll meat loaf mixture, pressing ends to seal. Bake 1 hour at 375 degrees. Remove excess fat. Pour on remaining tomato sauce and bake for an additional 15 minutes.