All-Purpose Flour
Accurate flour measurement matters here.
Too much flour can make the cookies dry, dense, and less likely to spread.
For the best result, use a kitchen scale. If measuring by cups, spoon the flour into the measuring cup and level it rather than scooping directly from the bag.
Butter
Use butter at a cool room temperature.
It should give slightly when pressed but still hold its shape.
If the butter is too warm, the cookies may spread too much and become thin.
Fresh Lemon Zest
The zest is what gives the cookie dough most of its lemon flavor.
Always zest the lemons before juicing them.
Fresh Lemon Juice
Fresh juice is best for the glaze.
Bottled lemon juice often tastes harsher and less aromatic.
Expert Tips for the Best Lemon Cookies
Cream the Butter, Sugar, and Zest Together
Beating the zest directly with the butter and sugar helps release the lemon oils and distribute the flavor through the dough.
Don’t Overmix After Adding Flour
Once the flour goes in, mix only until incorporated.
Overmixing can make the cookies tougher.
Flatten Before Baking
These cookies do not spread dramatically on their own.
Flattening the dough to about ⅓ inch thick helps them bake evenly.
Cool Completely Before Glazing
If the cookies are still warm, the glaze will melt and become thin.
Make the Glaze Thick
A thick glaze gives you that beautiful opaque white finish.