Relatively guilt-free thin mint cookie milk shake

My husband has a Girl Scout cookie buying problem.  Last year, he bought an entire case of Thin Mints and another case of Samoas, plus one box of Thank You Berry Munch.  This year, he upped the ante and bought 27 boxes.  Despite making Thin Mint cheese cake, giving away boxes to family and friends, and eating an insane amount of them myself, I STILL have Thin Mints in my freezer from last year.    Desperate to use them up before I find two more cases of cookies in my kitchen, I came up with this relatively guilt-free thin mint cookie milk shake recipe.

4 small scoops of Fat Free Vanilla Frozen Yogurt.  I'd guess about 1.5 cups, but I didn't measure.
1/2 c low fat milk - This I did measure :)
4 - 6 thin mint cookies, depending on how chunky and minty you want your shake
Approximately 2 Tbsp chocolate syrup

Combine all ingredients in a blender until smooth.  I used our Ninja and it worked awesome.

These are really rich, and the best part is that if you use skim milk the only fat in the whole thing is from the cookies.  This will make one large glass of shake.  I was not able to finish mine.  I might recommend doubling the recipe and splitting it between three people.