Combine peanut butter and softened butter in a mixing bowl and beat until creamy.
Add vanilla extract and mix until incorporated.
Gradually mix in powdered sugar on low speed.
Fold in graham cracker crumbs and crushed Butterfinger bars.
Roll dough into 1–1½ tablespoon balls and place on a parchment-lined cookie sheet. Freeze for 30 minutes.
Melt chocolate at 50% power in 30-second intervals, stirring until smooth.
Dip each chilled ball into melted chocolate, fully or partially.
Decorate with crushed Butterfinger, sprinkles, or sea salt if desired.
Allow chocolate to harden completely before serving.