Preheat oven to 350º F.

Using an electric stand mixer cream the butter and sugar together until it is super light and fluffy, this can take 2-3 minutes to get it to really come together.

Add the egg and vanilla and beat until they are fully incorporated.

Stir in the sour cream until the mixture is smooth and combined.

Mix in all of the dry ingredients and mix until it just comes together. It will be a sticky dough.

Place in the fridge for at least an hour chill so the cookies hold their shape when you bake them.

Scoop balls of dough onto a baking sheet and bake for 11 minutes. You want the edges to be set and the tops to be just dry and set. Do not let the cookies get golden brown or they will be over cooked.

Remove from the oven and let cool for 10 minutes before removing to a wire rack to cool completely.

Prepare the glaze by mixing the ingredients together until you have a smooth and drizzle-able consistency.

Using a spoon spread the glaze over each cookie and decorate with sprinkles.