2 cups vanilla ice cream
1 cup milk*
1/2 cup vanilla or funfetti dry cake mix (from a boxed cake mix, I used Betty Crocker white), or more or less to taste
Sprinkles (optional...(or is it)
Combine all ingredients in a blender except sprinkles. Blend until smooth. Fold in sprinkles if desired. Pour into cups and serve immediately, garnished with more sprinkles if desired.
*You can replace some of this with half and half or cream, just depending on how thick and rich you want it.