Add some excitement to your next burger night with caramelized onions flavored with brown sugar, honey, and balsamic vinegar. You'll Never eat a plain burger again!
Halve 2 pounds of onions and slice ¼ inch thick through the root end.
Heat 2 tablespoons of oil in a 12-inch nonstick skillet over medium-low heat until shimmering.
Stir in onions, cover, and cook (stirring occasionally), until onions are softened and release their juices, about 10 minutes.
Remove the lid; Add the brown sugar, honey, vinegar, salt, and pepper. Increase heat to medium-high, and continue to cook, stirring often, until onions are deeply browned about 10 to 15 minutes.