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Caramelized Onion Butter

Caramelized Onion Butter

This Caramelized Onion Butter is a must-have for your holiday table!
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Prep Time 10 minutes
Cook Time 1 hour 5 minutes
Total Time 1 hour 15 minutes
Servings: 8 servings
Course: Sauce & Condiment
Cuisine: American
Ingredients Method Notes

Ingredients
  

  • 1 large yellow onion
  • 1 tbsp butter
  • 1 tbsp olive oil
  • 1 pinch salt
  • 1/2 cup unsalted butter
  • 1/2 tsp kosher salt
  • 1/4 tsp black pepper
  • 1 tsp fresh thyme

Method
 

How to Make Caramelized Onion Butter
  1. Mash caramelized onions into softened butter with salt, pepper, and thyme until smooth.
How to Caramelize Onions
  1. Heat butter and oil in a wide pan over medium-low until melted.
  2. Add onions, stir to coat, and spread evenly.
  3. Cook slowly for 15–20 minutes, stirring every few minutes, until soft and translucent.
  4. Add salt and lower heat slightly. Continue cooking for 30–45 minutes, letting onions sit between stirs for deep caramelization. Deglaze with 1–2 tbsp water as needed to prevent sticking.
  5. Onions are done when deep amber, jammy, and sweet. Taste and adjust salt; add pepper at the end if desired.

Notes

  • Deglaze the pan with a small amount of water to prevent onions from sticking and burning.
  • Use fresh thyme for the best flavor in the butter.
  • Let the onions caramelize slowly for the richest taste.