How to make cake glaze with powdered sugar

You can cover and store baked goods with basic powdered sugar glaze (even those that contain milk) at room temperature for up to 3 days.

To Keep Powdered Sugar from Melting, Add Cornstarch So go slow and be conservative with the amount of cornstarch you add. A good rule of thumb is 1 teaspoon of cornstarch for every 1/4 cup of powdered sugar used.

Cake Glaze Recipe Ingredients Butter – Salted or unsalted, your preference. Powdered Sugar – Also known as confectioners sugar or icing powder. If you don't have powdered sugar, you can puree granulated sugar in a food processor until soft and fluffy. Vanilla Extract – Pure rather than imitation if possible.