**Prepare the Peanut Butter Mixture**
- In a mixing bowl, combine peanut butter, softened butter, powdered sugar, and vanilla extract. Mix until smooth and well combined.
**Form the Balls**
- Scoop about 1 tablespoon of the mixture and roll it into a ball. Place the balls on a parchment-lined baking sheet. Repeat until all the mixture is used.
**Chill the Balls**
- Refrigerate the peanut butter balls for at least 30 minutes or until firm.
**Melt the Chocolate**
- In a microwave-safe bowl, melt the chocolate chips in 30-second intervals, stirring after each, until smooth. Add coconut oil or shortening for a shinier finish if desired.
**Coat the Balls**
- Using a fork or skewer, dip each chilled peanut butter ball into the melted chocolate, ensuring it is fully coated. Allow excess chocolate to drip off before placing it back on the parchment paper.
**Set the Coating**
- Let the chocolate harden by refrigerating the coated balls for another 20–30 minutes.
**Serve**
- Once the chocolate is set, transfer the peanut butter balls to an airtight container or serve immediately.