I want a simple frosting for the cookies, so the natural answer is a quick vanilla buttercream. Rather than a traditional buttercream (made by beating hot egg whites with sugar, then mixing in soft butter), I'll make a quick version with confectionary sugar, butter, heavy cream, vanilla extract and the seeds from a vanilla bean (these are going to be some violently vanilla cookies).
I don't really have the time to fool around with decorations, so I'm thinking simple round or square cookies with frosting - maybe using fork tines or something to that effect to further design the cookies, but we'll see if the frosting can hold up.
Gratuitously Vanilla Cookies
I used a recipe of the vanilla sugar cookies only this time I had brown sugar and I added the delicious innards of a vanilla bean.
Frosting
1 1/2 cups confectioner's sugar
1/2 cup butter, softened
1 tsp vanilla extract
seeds from 1 vanilla bean
2 -3 tbsp heavy cream
Mix the sugar and butter together on low speed in a stand mixer (or with a hand model) until well combined. Increase the speed to medium and beat for another 3 minutes. Add vanilla, vanilla beans, and cream beating for 1 minute more. Add a little more cream if necessary to get to spreading consistency.
Gratuitously vanilla sugar cookie, meet chocolate milk.