caramelized onion

Some spreads advertise no high-fructose corn syrup, no artificial flavors, colors, or preservatives, no artificial sweeteners, and non-GMO verification.

Many jars are sold ready-to-eat or ready-to-use, and some product notes say the onions can be heated through before serving.

Descriptions and reviews note that many jars are ready-to-eat or ready-to-use, making them a convenient, time-saving ingredient.

Common forms include pieces, crushed or blended preparations, and jam-style spreads.

They’re commonly used as toppings for burgers and sandwiches, stirred into sauces, soups, and stews, and paired with meats or chicken.