Chocolate Orange Cake Mix Cookies with Ganache Topping

One of my favorite flavor combinations is chocolate and orange . . . my favorite Christmas treat is the "Chocolate Orange" that I get in my stocking each year. But with Christmas still a couple of months away, I knew that I would have to come up with something else to tide over my craving until then. And these little Chocolate Orange Cookies were born. They are similar to my Chocolate Marshmallow Cookies, but instead have an orange buttercream filling and are topped with a rich ganache frostin