Enchilada Sauce

Heat oil in a skillet over medium-high heat. Stir in flour and chili powder. Reduce heat to medium and cook until lightly browned, stirring constantly to prevent flour from burning.

Gradually stir in tomato sauce, water, cumin, garlic powder, and onion salt. Stir until smooth. Continue cooking over medium heat, approximately ten minutes, or until slightly thickened. Season with salt to taste.