Sweet and Sour Hamburgers

Sweet and Sour Hamburgers

1 pound ground beef
1/2 cup oatmeal
1 medium onion, chopped
1 green pepper, chopped
1-1/2 tablespoons white vinegar
1-1/2 tablespoons brown sugar
1-1/2 teaspoons prepared yellow mustard
3/4 cup ketchup
1 large can crushed pineapple, drained, juice saved
2 Tablespoons cornstarch
salt and pepper to taste
6 hamburger buns (Buttery Bread Machine Buns)

Crumble the ground beef in a large skillet over medium-high heat. Add onion, green pepper, and oatmeal; cook and stir until meat is no longer pink. Drain excess grease, and stir in the vinegar, brown sugar, mustard, ketchup, drained pineapple, salt and pepper. Mix pineapple juice with cornstarch in a mason jar. Add enough water to make about 1/2 cup, if needed. Shake until smooth. Slowly add to simmering meat mixture while stirring. Continue simmering over medium heat for about 15 minutes. Serve on buns or over rice.