I found the original recipe here (click on picture):
I made a few small changes when I made it, and loved it! I think I will try a few other changes and see how they go.
For my changes:
I used Chobani vanilla fat free yogurt
I used Biscoff European cookie spread rather than peanut butter
I added only about 1/8 tsp vanilla
I did not add any sweetener.
I plan to try adding about 1/8 cup to 1/4 cup dry oatmeal to make it like an oatmeal cookie dough and see how that goes next time.
P.S. My 20 month old daughter LOVED this also. A great snack to remember for the future to keep her eating healthier without feeling like she has to give up on taste.