Prepare cake mix according to package directions. Allow the cake to completely cool.
Once cooled, break the cake up into small pieces and place in a large mixing bowl. Add 1 cup of vanilla frosting and 1/4 cup red, white and blue jimmies sprinkles. Mix well. Cover and refrigerate for 20 minutes.
Line a large cookie sheet with wax or parchment paper. Set aside. Roll the chilled cake mixture into 1 inch balls and place on the lined cookie sheet.
Add white or colored candy melts to a microwave safe bowl. Microwave for 45 seconds. Stir until completely melted and smooth.
Dip each cake ball into the melted candy melts and place on the lined cookie sheet. Immediately sprinkle with the remaining red, white and blue jimmies sprinkles.