Step 1: In a large mixing bowl, combine the creamy peanut butter, softened unsalted butter, 2 cups of powdered sugar, and vanilla extract.
Step 2: Mix with a wooden spoon or electric mixer on low speed until all ingredients are well combined and a thick, uniform dough forms. Scrape down the sides of the bowl as needed.
Step 3: Roll the mixture into approximately 1-inch balls. Place the rolled balls on a parchment-lined baking sheet.
Step 4: Refrigerate the peanut butter balls for at least 30-60 minutes, or until firm. This step is crucial for easy dipping.
Step 5: If coating with chocolate: In a microwave-safe bowl, combine the semi-sweet chocolate chips and coconut oil. Microwave in 30-second intervals, stirring well after each, until the chocolate is smooth and melted.
Step 6: Dip each chilled peanut butter ball into the melted chocolate, allowing excess to drip off. Use a fork or a dipping tool for best results. Place them back on the parchment-lined baking sheet.
Step 7: Return the chocolate-coated balls to the refrigerator for another 30 minutes, or until the chocolate coating is completely set. Serve and enjoy!