Homemade cake flour requires just 2 ingredients and takes 2 minutes, but you can always have it on hand even if you don't stock cake flour in your pantry. You know exactly what is going into the flour, and it's cheaper than buying the premade mix. You'll use this hack over and over again!
Measure flour by scooping it into a measuring cup and scraping the top off with the back of a knife to level it. Remove 2 Tbsp flour and return to your flour bin.
Add 2 Tbsp cornstarch to your flour.
Use a fine mesh sieve or flour sifter to sift the two together about 4-5 times to make sure they are really well combined.
Notes
Scaling the Recipe: If your recipe calls for more cake flour, increase the ingredients proportionally - i.e. 2 cups flour (minus 4 Tbsp flour) with 4 Tbsp cornstarch, etc.Store cake flour substitute as you would any other flour, in an airtight container in the pantry. Check when the AP flour and cornstarch expire to know when the cake flour expires, usually 6 to 8 months.
Nutrition Facts
How to Make Cake Flour
Amount per Serving
Calories
516
% Daily Value*
Fat
1
g
2
%
Saturated Fat
0.2
g
1
%
Polyunsaturated Fat
1
g
Monounsaturated Fat
0.1
g
Sodium
4
mg
0
%
Potassium
134
mg
4
%
Carbohydrates
110
g
37
%
Fiber
4
g
17
%
Sugar
0.3
g
0
%
Protein
13
g
26
%
Calcium
19
mg
2
%
Iron
6
mg
33
%
* Percent Daily Values are based on a 2000 calorie diet.