Go Back
–+ servings
Slow cooker caramelized onions - for those times when you don't want to spend an hour caramelizing them on the stovetop - these cook while you sleep! Get the easy recipe on RachelCooks.com!
Print Recipe
5 from 1 vote

Slow Cooker Caramelized Onions

Slow cooker caramelized onions are perfect for those times when you don’t want to spend an hour caramelizing them on the stovetop. These cook while you sleep!
Prep Time10 minutes
Cook Time15 hours
Total Time15 hours 10 minutes
Course: How To
Cuisine: American
Servings: 16 servings
Author: Rachel Gurk

Ingredients

  • 8 to 10 onions, sliced in half moons, about ½ inch thick
  • 2 tablespoons unsalted butter
  • 1 tablespoon olive oil

Instructions

  • Add all ingredients to a slow cooker. Cook on low for 10 hours (I do it overnight).
    8 to 10 onions, sliced in half moons, about ½ inch thick, 2 tablespoons unsalted butter, 1 tablespoon olive oil
  • To eliminate extra liquid in the onions, cook them for another 3 to 5 hours with the lid ajar to thicken the onions. This will also result in a darker, sweeter onion. If you’re in a rush, simply drain the extra liquid from the onions.
  • Refrigerate onions in a covered container for up to 5 days or freeze for up to 4 months.

Notes

  • Makes about 4 cups.

Nutrition

Serving: 0.25cup | Calories: 50kcal | Carbohydrates: 7g | Protein: 1g | Fat: 2g | Saturated Fat: 1g | Polyunsaturated Fat: 0.2g | Monounsaturated Fat: 1g | Trans Fat: 0.1g | Cholesterol: 4mg | Sodium: 3mg | Potassium: 110mg | Fiber: 1g | Sugar: 3g | Vitamin A: 45IU | Vitamin C: 6mg | Calcium: 18mg | Iron: 0.2mg

QR Code

Scan this QR code with your phone's camera to view this recipe on your mobile device.

qr code

*If you're viewing this on your phone, press and hold the QR code to open in your browser.