Slow Cooker Caramelized Onions
Slow Cooker Caramelized Onions are mellow, sweet, and versatile. Use them for everything from French onion soup to omelet fillings to burger toppings.
Servings 16 servings
Calories 69kcal
Equipment
- 1 vacuum sealer (optional)
Ingredients
- 4 - 5 pounds onions (yellow, red, or sweet)
- 3 tablespoons olive oil
- 1 teaspoon kosher salt
Instructions
- Slice onions from pole to pole (root to stem), about ⅛"-¼" inch thick.Cutting the onions this way prevents them from breaking down too much during cooking.
- Fill Slow Cooker about ⅔ full of cut onions. Drizzle in olive oil and toss to coat. Cover slow cooker and set to LOW.
- Cook for 10-18 hours, stirring every few hours if you are available. (It's also OK if you don't stir them at all.) Onions are done when they are dark brown, soft, and swimming in a thick liquid.
- For thicker, jammier caramelized onions with deeper color, uncover the slow cooker and continue to cook onions on low for an additional 3-5 hours.
- Caramelized onions may be used immediately, or refrigerated or frozen for later use.
Notes
Caramelized onions may. be kept in the refrigerator for up to a week, or frozen for up to six months.
Nutrition
Serving: 4tablespoons | Calories: 69kcal | Carbohydrates: 11g | Protein: 1g | Fat: 3g | Saturated Fat: 0.4g | Polyunsaturated Fat: 0.3g | Monounsaturated Fat: 2g | Sodium: 150mg | Potassium: 166mg | Fiber: 2g | Sugar: 5g | Vitamin A: 2IU | Vitamin C: 8mg | Calcium: 26mg | Iron: 0.3mg
