These little macaron look-a-likes are actually mini cupcakes that after being baked have their bottoms chopped off (we suggest saving them to make cake pops!) and are filled with a little marshmallow creme. We ran across the idea over at Tablespoon a little while back and the idea seems simple enough to make them on a larger scale to make whoopie pies (in a totally cheater method) as well.
Even if you can't consider them macarons (faux or not) they're still a fun treat, so pull out your favorite cupcake recipe and put it to use! Try using this recipe for marshmallow peeps for the filling as it's a bit softer than other recipes and will pipe nicely! Check out the full directions over at Tablespoon.