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Make beautifully caramelized onions in your slow cooker with this easy recipe. Ideal for soups, burgers, omelets, pizzas, and more.
View original recipe on allrecipes.comRub bottom and sides of slow cooker with 1/2 of the butter. Toss onions and salt with remaining butter in a bowl.
Cook onions on Low until browned and sweet, about 10 hours.
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