Marinated Tomatoes And Onions

Ingredients

• 1 1/2 tsp. basil
• 1 tsp. sugar
• 1/2 tsp. salt
• 1/4 tsp. dry mustard
• 1/4 tsp. garlic powder
• 1/4 tsp. pepper
• 3 Tbsp. white vinegar
• 1/2 c. oil
• 1 onion, sliced
• 3 large tomatoes
• 1/4 c. parsley