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Caramelized Onion Compound Butter Recipe


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4.2 from 12 reviews

  • Author: Chef
  • Total Time: 55 minutes
  • Yield: 8 servings

Description

This rich and flavorful compound butter recipe combines caramelized sweet yellow onions with herbs and a touch of Worcestershire sauce, creating a smooth and savory butter perfect for enhancing meats, vegetables, and breads. The slow-cooked onions add deep sweetness and complexity, making this butter an elegant addition to any dish.


Ingredients

Onion Mixture

  • 1 large sweet yellow onion, sliced
  • 2 tablespoons unsalted butter, softened
  • ¼ teaspoon salt
  • ⅛ teaspoon black pepper

Butter Blend

  • 10 tablespoons unsalted butter, softened
  • 1 teaspoon minced garlic (1-2 cloves)
  • ½ teaspoon Worcestershire sauce
  • ⅛ teaspoon dried thyme
  • ½ tablespoon chopped parsley
  • Pinch of salt and black pepper


Instructions

  1. Caramelize the onions: Place the sliced onion, 2 tablespoons of butter, ¼ teaspoon salt, and a pinch of black pepper in a skillet over medium heat. Cook the onions, stirring frequently, for about 45 minutes until they have caramelized into a deep brown, sweet flavor.
  2. Cool the onions: Remove the skillet from the heat and let the caramelized onions cool for 5-10 minutes to prevent melting the butter in the next step.
  3. Blend the ingredients: In the bowl of a food processor, add the remaining 10 tablespoons of softened butter, the cooled caramelized onions, minced garlic, Worcestershire sauce, dried thyme, chopped parsley, and a pinch of salt and pepper. Pulse until the mixture is completely smooth and evenly combined.
  4. Refrigerate the compound butter: Transfer the blended butter to a container or mold and refrigerate it until firm and ready to serve. This allows flavors to meld beautifully and gives a perfect spreadable consistency.

Notes

  • Worcestershire sauce adds a subtle umami flavor; substitute with soy sauce or omit for a different flavor profile.
  • Caramelizing onions slowly is crucial for developing the deep, sweet flavor in the butter.
  • Store the compound butter in an airtight container in the refrigerator for up to two weeks or freeze for longer storage.
  • This butter pairs wonderfully with grilled meats, roasted vegetables, or melted on warm bread.
  • Prep Time: 10 minutes
  • Cook Time: 45 minutes
  • Category: Condiment
  • Method: Stovetop
  • Cuisine: American