1 Tbsp. cooking oil 1 medium onion, finely chopped (approx. 3/4 cup)* 1 can diced green chiles, 7 oz. (approx. 1 cup)* 1 can Mexican style sliced stewed tomatoes, 14.5 oz. (approx. 2 cups)* 2 tsp. dried oregano, crushed 2 tsp. onion powder 1/2 tsp. garlic powder 1 oven b...