2 tablespoons vegetable oil
1 medium onion, chopped (better yet, use 1 teaspoon dried onion flakes)
1 lb. ground beef
1⁄3 cup tomato ketchup
1 T cider vinegar
1 tablespoons brown sugar
1 teaspoon Worcestershire sauce
½ tsp garlic powder
1 teaspoons seasoning salt and a pinch or two of pepper
In a large skillet over medium heat, brown onion and sauté until soft, then add meat, stirring constantly with a fork to crumble.
When meat is brown, add all remaining ingredients and simmer, uncovered, stirring occasionally until most of the liquid cooks out (about 15-20 minutes). Spoon onto hamburger buns.