Do I really need to chill the dough?
Yes, if you want clean edges and less spreading. A minimum 1 hour chill makes rolling easier and helps the cookies keep their shape in the oven. If your kitchen is warm, go for 2 hours.
How thick should I roll sugar cookie dough?
My happy place is 1/4 inch. Thinner gives you snappier cookies, thicker can stay a bit doughy in the center. If you want super-soft cookies, roll closer to 5/16 inch and add 1 minute of bake time.
Why did my cookies spread?
Usually one of three things: butter was too soft, dough was not chilled enough, or the baking sheet was warm. Chill cut cookies on the tray for 10 minutes before baking if you suspect spreading.
My dough is cracking or feels dry. What now?
Two common culprits: the dough is over-chilled or you added too much flour while rolling. Let the dough sit at room temp for 5 to 10 minutes, then try again. If it is still crumbly, knead it in the bowl with your hands for 10 to 15 seconds to bring it back together (no need to overwork it).
Can I make these ahead for a party?
Absolutely. Bake the cookies up to 3 days ahead and glaze 1 day ahead, or freeze baked unglazed cookies and glaze after thawing.
Can I flavor the cookies or glaze?
Yes. Add 1/2 teaspoon almond extract (and reduce vanilla slightly), or add 1 teaspoon citrus zest for a brighter vibe. For the glaze, swap in a few drops of peppermint extract, or add lemon zest for a fresh twist.
How do I thin or thicken the glaze?
To thin, add milk a teaspoon at a time. To thicken, add a spoonful of powdered sugar. A thicker glaze sets faster, and humid kitchens slow everything down a bit.