Onion powder is often used as a seasoning for meat, poultry, fish, and vegetables. It can be used as a dry rub or added to marinades to infuse flavor into the food. Onion powder can also be added to soups, stews, and sauces to add depth and complexity to the dish. Onion powder is a versatile spice that is easy to use and can be stored for long periods of time. It is a popular ingredient in many spice blends, including Cajun seasoning, taco seasoning, and chili powder. Onion powder can also be used in dry soup mixes, salad dressings, and dips.