Cream butter and sugar in an electric mixer until light and fluffy.
Add cake mix, flour and salt, mix for a minute to combine. Add milk and Fireball Whisky, and continue mixing until the mixture is well combined and bright red. You can use as much Fireball as you like, keeping in mind that none of the alcohol will burn off as these are not cooked.
Using a cookie scoop, scoop mixture onto platter and roll into balls. Refrigerate for at least 1/2 hour to firm up.
Cover platter or cooking sheet with wax paper or parchment paper. Melt white chips one bag at a time, for about a minute and a half total in the microwave. Heat in thirty second intervals, mixing well after each thirty seconds.
Dip truffles in melted chips using forks or toothpicks (or your fingers) until the truffle is completely coated. Sprinkle truffles with decorative sprinkles before the white chocolate hardens. Return truffles to refrigerator until they firm up.