Ingredients

• 1 chopped onion
• 2 garlic cloves, minced
• 1 sprig fresh thyme
• 1 tablespoon unsalted butter
• 1 pound shell-on shrimp
• 2 sticks butter, softened
• kosher salt and freshly ground black pepper

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Instructions

1. In a 12" skillet, caramelize onion, garlic cloves, and thyme in unsalted butter. Toss in shrimp; cook slowly until golden. Transfer to a food processor and purée until smooth; with processor running, add softened butter, 1 Tbsp. at a time. Force through a fine-mesh strainer. Season with kosher salt and freshly ground black pepper. For a super-fine texture, strain again.