Homemade Powdered Sugar
Desserts

Homemade Powdered Sugar

ML
By Marie Lefebvre · Updated October 5, 2026

Making your own powdered sugar at home is incredibly easy and takes just minutes! With fine granulated sugar and cornstarch, you can create ultra-smooth confectioner's sugar whenever you need it — no more emergency store runs. Perfect for frostings, glazes, and delicate baked goods.

Prep⏱️ 6 min
Servings👥 1 servings
Difficulty📊 Very Easy
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🛒 Ingredients

1 servings

1
  • 500 g (2½ cups) fine granulated sugar
  • 3 tablespoons cornstarch
  • 1 pinch of fine salt
  • ½ teaspoon powdered vanilla extract (optional)

Directions

  1. 1

    Make sure your blender or food processor is completely dry — any moisture will cause the sugar to clump. Wipe the bowl and blades thoroughly with a clean, dry cloth.

  2. 2

    Add the granulated sugar, cornstarch, salt, and vanilla powder (if using) to the blender.

  3. 3

    Blend on high speed for 1 to 2 minutes until you get a very fine, smooth powder. Pause halfway through to scrape down the sides if needed.

  4. 4

    Sift the powdered sugar through a fine-mesh sieve into a clean bowl to remove any remaining lumps or unground granules.

  5. 5

    Transfer to an airtight glass jar and store away from moisture. Your homemade powdered sugar will keep for several months.

💡 Chef's Tip

Never add any liquid — this is a dry-grinding process. For an extra-fine result, sift twice. Cornstarch is essential: it prevents caking and gives powdered sugar its characteristic silky, impalpable texture.