Combine the cookie butter and butter in a large bowl, and beat until combined and smooth.
Add in the vanilla and salt, and stir them into the mixture.
Gradually add in the powdered sugar, while mixing slowly, until combined, and until it reaches a dough like consistency, that will hold its shape. Add more powdered sugar, 1 TBS at a time if needed.
Scoop into tablespoon sized portions and roll into balls. Place on a cookie sheet lined with parchment or a silicone liner.
Place in the freezer for about 30 minutes.
Melt white chocolate chips in a small bowl in 30 second increments, stirring after each, until smooth. It should just take about 1-2 minutes total.
Remove cookie butter balls from the freezer and stick a toothpick in the top.
Use the toothpick to hold it and dip the buckeye ball into the white chocolate.
Return the ball to the cookie sheet. Remove the toothpick.
Use your fingers to smooth the cookie butter to remove the toothpick hole, if desired.
Repeat with additional balls. Drizzle extra white chocolate over the top, if desired.
Set pan in the fridge to help chocolate harden.
Store buckeye balls in the fridge in a ziplock bag, or airtight container for up to 2 weeks.