Ingredients

• 1 1/3 cups fresh shelled peas (from about 1 pounds pods) or frozen peas, thawed
• 1 teaspoon kosher salt, plus more
• 1/2 cup (1 stick) plus 1 tablespoon unsalted butter, room temperature, divided
• 1 medium shallot, finely chopped (about 1/4 cup)
• 1/4 teaspoon freshly ground black pepper
• 1/4 teaspoon finely grated lemon zest

Instructions

1. If using fresh peas, cook in a medium saucepan of boiling salted water until tender, about 3 minutes (if using frozen peas, do not cook). Drain, transfer to a bowl of ice water, and let sit until cold, about 3 minutes. Drain and pat dry.
2. Melt 1 Tbsp. butter in a medium skillet over medium high heat. Add shallot and cook, stirring occasionally, until softened, about 2 minutes. Transfer to a food processor. Add peas, pepper, lemon zest, 1 tsp. salt, and remaining 1/2 cup butter; pulse until just combined.
3. Pea butter can be made 3 days ahead; cover and chill, or freeze up to 3 months.