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bowl of oat flour

How to make oat flour

  • Author: Britt Berlin
  • Prep Time: 1
  • Cook Time: 2
  • Total Time: 3 minutes
  • Yield: 3 cups 1x
  • Category: Baking
  • Cuisine: American
  • Diet: Gluten Free


Learn how to make oat flour from scratch in less than 2 minutes! The easiest gluten free kitchen trick for making a cheap DIY gluten free flour that’s free of gums!


  • 3 1/2 cups rolled gluten-free oats


  1. In a large food processor, pulse the oats until they’re a fine powder, about 2 minutes.
  2. You can control whether you want coarsely ground oats or a fine powder. Sift the flour through a flour sifter and into a plastic bag or large glass container that can be sealed shut.
  3. Store the flour in a cool area in the pantry for up to 3 months or in the freezer for up to 6 months.


  • Serving Size: 1/4 cup oat flour
  • Calories: 105
  • Sugar: 0.2 g
  • Sodium: 4.9 mg
  • Fat: 2.4 g
  • Saturated Fat: 0.4 g
  • Trans Fat:
  • Carbohydrates: 17.1 g
  • Fiber: 1.7 g
  • Protein: 3.8 g
  • Cholesterol: 0 mg

Keywords: how to make oat flour, homemade oat flour, oat flour recipes