Funfetti Cake Dip

1 (18.9 oz) box Funfetti cake mix
2 cups fat-free plain yogurt
1 cup Cool Whip (lite or regular)
Animal Crackers

In a large bowl, mix together cake mix, plain yogurt and Cool Whip until completely combined and you see no more lumps. Cover with plastic wrap and allow to chill for about 4 hours. Garnish with additional sprinkles if desired and serve with crackers, and enjoy! 

Source: http://miss-dixie.blogspot.com/2012/09/funfetti-cake-dip-deliciousness.html