These cute little critters come inside of magical jumbo egg that your kids can decorate. (thefashionablehousewife.com)
Note: Very important that you use jumbo eggs and place the ingredients in the blender. (girlgonecountry.com)
I had to tweak a little based on what was in my cupboard (regular unsalted butter, organic sugar, ghiradelli bittersweet chips, organic jumbo eggs....) (orangette.net)