2 lbs. pork ribs
1 c. onion, chopped
2 tbsp. brown sugar
2 tbsp. vinegar
1 tsp. prepared mustard
1 (15 oz.) can tomato sauce
Salt
Pepper

Place ribs in a 2-quart microwave-safe dish. Combine remaining ingredients except salt and pepper. Pour over ribs. Cook in microwave oven, covered, on slow-cook for 25-30 minutes or until meat is tender and temperature of 170 degrees if reached. Turn ribs over halfway through cooking time. Season with salt and pepper as desired.