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Crock-Pot Caramelized Onions Recipe

Crock-Pot Caramelized Onions Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.9 from 12 reviews
  • Author: Elizabeth
  • Prep Time: 10 minutes
  • Cook Time: 10 hours
  • Total Time: 10 hours 10 minutes
  • Yield: About 2 cups
  • Category: Side Dish, Condiment
  • Method: Slow Cooker
  • Cuisine: American
  • Diet: Vegan, Gluten-Free

Description

Learn how to make deliciously caramelized onions in a Crock-Pot with this easy recipe. Perfect for adding flavor to a variety of dishes!


Ingredients

Scale

Yellow Onions:

  • 3 pounds, thinly sliced

Butter and Oil Mixture:

  • 3 tablespoons unsalted butter, melted
  • 1 tablespoon olive oil

Seasonings:

  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon sugar (optional)
  • 1/4 teaspoon baking soda (optional)


Instructions

  1. Prep the Onions: Place the sliced onions in the Crock-Pot.
  2. Add Butter and Oil: Drizzle with the melted butter and olive oil.
  3. Season: Sprinkle with salt, pepper, sugar, and baking soda (if using).
  4. Combine: Stir everything together to coat the onions evenly.
  5. Cook: Cover and cook on low for 10–12 hours, stirring occasionally.
  6. Finish: Uncover, cook on high if excess liquid remains until onions are caramelized. Cool before storing.

Notes

  • Great for burgers, pizzas, soups, dips, or sandwiches.
  • Using baking soda speeds up browning, but optional.
  • For sweeter onions, mix yellow and sweet varieties.

Nutrition

  • Serving Size: 2 tablespoons
  • Calories: 45
  • Sugar: 3g
  • Sodium: 90mg
  • Fat: 3.5g
  • Saturated Fat: 1.5g
  • Unsaturated Fat: 2g
  • Trans Fat: 0g
  • Carbohydrates: 4g
  • Fiber: 1g
  • Protein: 0g
  • Cholesterol: 5mg