Sift the 1 cup powdered sugar into a medium bowl. Whisk in the 2-3 tablespoons fresh lemon juice, using 2 tablespoons to start and adding more if needed. Adjust the consistency by adding more sugar for a thicker glaze or more lemon juice for a thinner glaze.
Notes
Consistency matters. You can add more powdered sugar to make a thick, frosting-like glaze or add more lemon juice for more of a drizzly icing. Make sure to have extra sugar and juice on hand so you can adjust as needed.
Fresh lemon, please! OK, bottled lemon juice totally works, too; it's just that freshly squeezed lemon juice tastes so much better.
Add to cooled items only. The quickest way to make a glaze disappear is to add it to warm baked goods! Make sure to thoroughly cool cakes, cookies, muffins, etc., before adding the glaze so that it shows up prettily on top.
Sift the sugar. ALWAYS sift powdered sugar before whisking it into glazes or mixing it into frostings. This will eliminate any lumps and instead create a gorgeously smooth glaze.
Double up. Easily double or even triple the quantities in the recipe card to make more glaze.