Granulated Sugar and Cornstarch Blend (Best Option)
1 cup granulated sugar + 1 tablespoon cornstarch = 1 cup powdered sugarPowdered sugar is essentially granulated sugar ground to a fine powder with a small amount of cornstarch to prevent clumping. By replicating this at home, you maintain the fine texture necessary for smooth icing and proper sweetness in cinnamon rolls.
Use a high-speed blender or coffee grinder to pulverize the sugar and cornstarch until very fine. Sift the mixture before use to remove any larger particles. This method allows control over texture and freshness.
The final icing or glaze will closely resemble that made with store-bought powdered sugar, maintaining the expected smoothness and sweetness without altering the cinnamon rollβs texture.