
Caramelized onions are one of those kitchen transformations that feel almost magical — a pile of sharp, raw slices slowly becoming something sweet, jammy, and deeply savory. This version keeps things beautifully simple, relying on avocado oil and time rather than any grain-based thickeners or additives that could sneak wheat into the mix. The low-and-slow method is the real secret here, coaxing out natural sugars over 40-plus minutes until every strand is golden and glossy. A splash of balsamic vinegar at the end is optional but adds a subtle tang that makes the whole thing taste almost restaurant-worthy. Pile them onto burgers, stir them into soups, spoon them over roasted meats, or tuck them into grain-free wraps — they elevate just about everything they touch. With only a handful of clean, whole-food ingredients, this is the kind of recipe you'll find yourself making on repeat.
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Heat the avocado oil in a large (12-inch) skillet over medium heat until shimmering.
Add the sliced onions and salt, then stir to coat evenly in the oil. Cook, stirring every 3–4 minutes, until the onions have wilted and released most of their moisture, about 10 minutes.
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