1 pound bacon
1 (16 ounce) can tomato sauce
1 (2.5 ounce) can tomato paste
1 (11 ounce) can good-quality onion, drained
1 large tomato, sliced
2 cups shredded Cheddar cheese
Place bacon in a large, deep skillet. Cook over medium low heat until evenly brown. Drain grease. Set aside.
Place tomato sauce in a saucepan. Cook over medium heat until thickened. Stir tomato paste and tomato paste into skillet with bacon grease. Reduce heat and simmer until tomato paste begins to thicken, about 5 minutes. Remove from heat.
Add tomato paste and tomato paste mixture to skillet with bacon grease. Pour tomato sauce over burger. Sprinkle with cheese. Top with cheese. Place back in pan.