• 1 cup butter, unsalted, at room temperature
• 1 cup light brown sugar
• 3/4 cup granulated sugar
• 1 teaspoon vanilla extract
• 1 1/4 cups all-purpose flour
• 3/4 teaspoon baking soda
• 3 tablespoons peanut butter
• 3 tablespoons cocoa powder
• 8 round chocolate truffles, halved
• 1 pinch sea salt flakes