Caramelized Onion Butter Board

Featured in: Sweet Cozy Treats

This dish showcases golden caramelized onions slowly cooked until deeply sweet and tender, then blended into creamy, salted butter. The spread is smooth and savory, perfect for topping crisp crackers or fresh baguette slices. Herbs like chives and thyme add aromatic notes, while a sprinkle of flaky sea salt enhances flavor. It's an easy appetizer that balances richness and sweetness beautifully, ideal for gatherings or simple indulgence.

Updated on Sun, 15 Feb 2026 00:43:40 GMT
A creamy butter board topped with rich, golden caramelized onions and fresh herbs, perfect for spreading on baguette slices. Save
A creamy butter board topped with rich, golden caramelized onions and fresh herbs, perfect for spreading on baguette slices. | hazeldish.com

The Caramelized Onion Butter Board is a sophisticated yet simple appetizer that brings a touch of gourmet elegance to any table. This dish combines the creamy richness of high-quality butter with the deep, jammy sweetness of slow-cooked yellow onions, creating a savory spread that is designed for sharing. Whether you are hosting a dinner party or looking for a special snack, this contemporary American classic is a crowd-pleaser that pairs beautifully with fresh bread and crisp crackers.

A creamy butter board topped with rich, golden caramelized onions and fresh herbs, perfect for spreading on baguette slices. Save
A creamy butter board topped with rich, golden caramelized onions and fresh herbs, perfect for spreading on baguette slices. | hazeldish.com

The beauty of this recipe lies in its transformation of basic ingredients. By slowly cooking onions until they are deeply caramelized, you create a complex flavor profile that balances perfectly with the salt and creaminess of the butter. Topped with fresh herbs and a sprinkle of flaky sea salt, every bite offers a harmony of textures and tastes that will have your guests coming back for more.

Ingredients

  • For the Caramelized Onions
  • 2 large yellow onions, thinly sliced
  • 2 tbsp unsalted butter
  • 1 tbsp olive oil
  • 1/2 tsp kosher salt
  • 1/2 tsp sugar
  • 1/4 tsp freshly ground black pepper
  • For the Butter Board
  • 250 g (8 oz) unsalted butter, softened to room temperature
  • 1/2 tsp flaky sea salt, plus extra for garnish
  • 1 tbsp fresh chives, finely chopped
  • 1 tsp fresh thyme leaves (optional)
  • Freshly ground black pepper, to taste
  • For Serving
  • Crackers, for serving
  • 1 baguette, sliced
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Instructions

1.
In a large skillet over medium heat, melt 2 tablespoons butter and olive oil. Add the sliced onions and sprinkle with kosher salt and sugar. Stir well to coat.
2.
Cook onions, stirring occasionally, for 35–40 minutes until deeply golden and caramelized. Reduce heat if onions brown too quickly. Season with black pepper. Let cool to room temperature.
3.
In a medium bowl, mix the softened butter with half the caramelized onions, 1/2 teaspoon flaky sea salt, chives, and thyme (if using) until well combined and spreadable.
4.
Spread the butter mixture evenly onto a large serving board or platter using a spatula or the back of a spoon. Swirl for texture.
5.
Spoon the remaining caramelized onions over the top. Sprinkle with additional flaky sea salt, extra herbs, and freshly ground black pepper.
6.
Serve immediately with crackers and baguette slices.

Zusatztipps für die Zubereitung

Patience is essential for the best results; keep the heat at a steady medium and stir occasionally to ensure the onions brown evenly without burning. If the onions develop color too quickly, reduce the heat and add a small splash of water to help them soften and caramelize properly.

Varianten und Anpassungen

For an extra layer of depth, try adding a splash of balsamic vinegar to the onions during the final 5 minutes of cooking. If you prefer a milder, more delicate flavor, you can substitute the yellow onions with thinly sliced shallots.

Serviervorschläge

Serve the butter board immediately alongside a variety of crisp crackers and fresh baguette slices. To elevate the experience, pair this dish with a crisp white wine like Sauvignon Blanc or a light-bodied red wine to complement the rich, savory notes.

A close-up view of the savory caramelized onion butter board. Save
A close-up view of the savory caramelized onion butter board. | hazeldish.com

This Caramelized Onion Butter Board is a true celebration of flavor and texture. By following these simple steps, you can create a centerpiece that is not only delicious but also a beautiful conversation starter for your next event. Enjoy the rich, savory combination of silky onions and creamy butter!

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Recipe Help & Answers

How do I caramelize onions perfectly?

Cook sliced onions slowly over medium heat with butter and oil, stirring often, until they become deeply golden and soft, about 35-40 minutes.

Can I prepare the butter board ahead of time?

Yes, mix the butter and caramelized onions in advance and refrigerate. Bring to room temperature before serving for easy spreading.

What breads go best with this butter spread?

Crisp crackers and fresh baguette slices complement the creamy, savory spread perfectly, adding texture and balance.

Are there variations for the herbs used?

Fresh chives and thyme provide subtle aromatic notes, but you can experiment with rosemary or parsley based on your preference.

Can I add a tangy twist to the caramelized onions?

Adding a splash of balsamic vinegar during the last few minutes of cooking enhances depth and brightens the flavor.

Caramelized Onion Butter Board

Savory caramelized onions combined with creamy butter for a rich spread on crisp bread.

Prep Time
20 min
Time to Cook
40 min
Overall Time
60 min
Created by Isabel Grant

Dish Type Sweet Cozy Treats

Skill Level Easy

Inspired By Contemporary American

Makes 8 Number of servings

Dietary Details Vegetarian-Friendly

What You Need

Caramelized Onions

01 2 large yellow onions, thinly sliced
02 2 tablespoons unsalted butter
03 1 tablespoon olive oil
04 1/2 teaspoon kosher salt
05 1/2 teaspoon sugar
06 1/4 teaspoon freshly ground black pepper

Butter Board

01 8 ounces unsalted butter, softened to room temperature
02 1/2 teaspoon flaky sea salt, plus extra for garnish
03 1 tablespoon fresh chives, finely chopped
04 1 teaspoon fresh thyme leaves (optional)
05 Freshly ground black pepper, to taste

For Serving

01 Crackers, for serving
02 1 baguette, sliced

How to Make It

Step 01

Prepare the Caramelized Onions: In a large skillet over medium heat, melt 2 tablespoons butter with olive oil. Add sliced onions and sprinkle with kosher salt and sugar. Stir well to coat evenly.

Step 02

Caramelize the Onions: Cook onions, stirring occasionally, for 35 to 40 minutes until deeply golden and caramelized. Reduce heat if onions brown too quickly. Season with black pepper and allow to cool to room temperature.

Step 03

Blend the Butter Mixture: In a medium bowl, combine softened butter with half of the caramelized onions, 1/2 teaspoon flaky sea salt, chives, and thyme if using. Mix until well combined and spreadable.

Step 04

Assemble the Board: Spread the butter mixture evenly onto a large serving board or platter using a spatula or the back of a spoon, creating swirled texture.

Step 05

Garnish and Finish: Spoon remaining caramelized onions over the top. Sprinkle with additional flaky sea salt, extra herbs, and freshly ground black pepper.

Step 06

Serve: Serve immediately with crackers and baguette slices.

Tools You’ll Need

  • Large skillet
  • Wooden spoon or spatula
  • Mixing bowl
  • Serving board or platter
  • Bread knife

Allergy Details

Review each ingredient for allergens. Always reach out to a healthcare professional for help if you’re unsure.
  • Contains milk (butter)
  • Contains gluten (baguette, crackers) - use gluten-free alternatives if needed

Per-Serving Nutrition

Nutritional data is for general reference only. It shouldn't replace advice from your doctor.
  • Calorie Count: 210
  • Fats: 17 g
  • Carbohydrates: 13 g
  • Proteins: 2 g