Preheat the oven to 350 degrees F. Line a baking sheet with parchment paper and set aside. Place ½ cup granulated sugar in a shallow bowl to roll the cookies.

Combine the box of yellow cake mix, peanut butter, melted butter, and eggs in a large mixing bowl with an electric mixer. Mix until completely combined. This will be a thick dough.

Use a 1 ½ tablespoon cookie scoop to scoop out dough and roll into a ball in your hand. Roll in granulated sugar and place your cookie sheet 2 inches apart. Use the tines of a fork to press stripes in each cookie.

Bake cookies for 9-10 minutes until set. Let cookies cool completely before moving them from the pan. Line a cooling rack with a sheet of parchment paper.

Melt the white chocolate as instructed on the packaging and dip one-half of the cooled cookies. Set on parchment paper until hardened. Keep in an airtight container at room temperature for up to one week.