I used my snickerdoodle recipe, then I added 8 oz of M&M's to the dough, rolled them into big balls and then squished 5 more M&M's on top.
I first baked them up for my sacrifice lesson. When the girl's played the game and got an answer correct, they got an M&M. At the end, we talked about things we have to sacrifice for goals. I said are you willing to sacrifice these M&M's to reach your big goals? They all agreed and we went over the definition of sacrifice and then I told them they gave up something little for something bigger in return and pulled out the cookies. Of course they were all happy with their decision to give up the M&M's. Seemed to be an impacting object lesson ;)