Enchilada Sauce

2 tablespoons vegetable oil
2 tablespoons all-purpose flour
2 tablespoons chili powder
1/2 teaspoon ground cumin
1 can (8-ounce size) tomato sauce
2 cups water1 teaspoon salt
1/4 teaspoon garlic powder
Heat oil in large 2-quart saucepan; stir in flour and chili powder; cook for 1 minute. Add remaining ingredients bring to a boil and simmer for about 10 minutes.