preheat oven to 350˚
line a baking sheet with parchment paper
cream together butter and sugars, 3-5 minutes, 3 if using a stand mixer, 5 if using a hand mixer
add egg and vanilla, beat again
add flour and salt, stir until the dough forms
sprinkle the counter with some extra flour
scrape the dough out on the counter and knead lightly
lightly flour the top of the dough and make sure that anywhere the dough it going to touch is also floured
roll out the dough out to about a 1/4 inch thick
cut out with floured cookies cutters, gently place on parchment-lined baking sheet
bake for 10-12 minutes or until set, don't brown them up!
let them cool on the baking sheet for 15-20 minutes so they're set
then move to a cooling rack
make the icing by mixing all ingredients with a mixer
color as desired, be sure to read about HOW to color red, black, and white glaze in the post, it's full of chef tips!
use piping bags to dot or swirl color on your cookies, you can drag a toothpick to make some feathered designs