Ingredients

• 1 large yellow onion, very finely diced
• 3 tbsp unsalted butter (for sautéing)
• 1 tbsp olive oil
• ½ tsp sugar (optional, helps caramelize)
• ½ tsp salt
• ¼ tsp black pepper
• 1 tsp fresh thyme (or ½ tsp dried)
• 1 small garlic clove, minced (optional)
• 1 splash balsamic vinegar (optional; adds depth)
• 1 stick (8 tbsp) unsalted butter, softened
• Optional add-ins:
  • 2 tbsp finely shredded Gruyère or Parmesan
  • ½ tsp Worcestershire

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Caramelize the Onion

1. Heat the olive oil + 3 tbsp butter in a skillet over medium-low.
2. Add diced onion, salt, pepper, and sugar.
3. Cook slow and low, stirring occasionally, 20–25 minutes, until deep golden and jammy.
4. Add garlic + thyme during the last 3 minutes.
5. Deglaze with a splash of balsamic if desired.
6. Remove from heat; let cool completely.

Tip: Don’t rush — color = flavor!

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Mix the Butter

In a bowl combine:

• Softened 8 tbsp butter
• Cooled caramelized onion mixture

Mix until evenly incorporated.
Taste; adjust salt/pepper.

If adding cheese, finely shred and fold in now.

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Shape & Chill

Scoop onto parchment or plastic wrap.
Roll into a log.
Chill 1 hour to firm.

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Ways to Use It

• Spread on toasted baguette
• Melt over steak, grilled chicken, or pork chops
• Stir into mashed potatoes
• Toss with hot pasta
• Slather on steamed veggies
• Rub under the skin of roasted chicken