Italian Salad 19 Sep 11

6 medium tomatoes
1/2 cup salad oil
2 tbsp cider vinegar
1-1/2 tsp oregano
1 tsp sugar
1/2 tsp salt
1/4 tsp garlic powder
1/4 tsp pepper
1 medium onion, thinly sliced

Cut tomatoes into thick slices. Combine other ingredients. Alternate tomato/onion slices in large, flat bowl. Pour mixture over all. Let stand 1 hour and garnish with parsley.