Combine cake mix and sugar in a medium bowl. Whisk together until combined and free of clumps. Add milk and whisk until well combined. Add remaining ingredients and whisk until well combined again.
Add to ice cream maker. Freeze according to manufacturers' ingredients. Add sprinkles during the 'mix-in' phase of churning or stir in when you transfer the frozen ice cream to the freezer. Transfer to a quart container and freeze until ready to serve.