
Caramelized onions are one of those kitchen transformations that feel almost magical โ a pile of raw sliced onions slowly coaxing into something deeply golden, jammy, and rich over low, patient heat. This version keeps things beautifully simple, relying on avocado oil and a little sea salt to coax out every bit of natural sweetness from the onions without any nightshade ingredients sneaking in. That matters more than it sounds, since so many condiments and flavor boosters that typically get added to savory recipes are off the table when you're avoiding that plant family. The optional splash of balsamic vinegar at the end adds a subtle tang and a gorgeous glossy finish that makes the whole pan look like something from a restaurant kitchen. Patience is the real secret here โ the low-and-slow method over 40-plus minutes is what builds that deep, complex flavor you just can't rush. Use them piled onto grilled meat, stirred into soups, or spooned over roasted vegetables for an instant upgrade to almost any plate.
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Learn more โ6 servings




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 3โ4 minutes, until the onions have wilted and released most of their moisture, about 10 minutes.
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