Cake Flour Substitute

Cake Flour Substitute

Save money and avoid unwanted ingredients. Here’s how to make a simple cake flour substitute.

  • Author: Erin Huffstetler,
  • Prep Time: 2 minutes
  • Cook Time: 0 minutes
  • Total Time: 2 minutes
  • Yield: 1 cup 1x
  • Category: Ingredient Substitutions
  • Method: Mix
  • Cuisine: Global


  • 1 scant cup all-purpose flour (bleached or unbleached)
  • 2 Tbsp cornstarch or arrowroot powder


Spoon cornstarch or arrowroot into a one-cup measure cup.

Spoon all-purpose flour into the cup, until full. Level off any excess.

Then, pour the mixture into a bowl, and stir to combine the cornstarch and flour. A flour sifter is even better, if you have one.

Use in place of one cup of cake flour.

To Make a Larger Batch:

2 cups = 1/4 cup cornstarch (or arrowroot powder) + 1-3/4 cup all-purpose flour

8 cups (the equivalent of one store-bought box) = 1 cup cornstarch (or arrowroot powder) + 7 cups all-purpose flour


  • In the UK, all-purpose flour is called plain flour, and cornstarch is called corn flour.
  • Nutrition facts are based on using unbleached flour and cornstarch