How to Make Oat Flour

5 from 1 vote

Learn how to make oat flour at home in minutes using just one ingredient! Easy, budget-friendly, and perfect for gluten-free baking.

Prep Time5

Total Time5

Course: DIY

Cuisine: World

Keyword: Oat flour

Servings: cups

Calories: 897kcal

Add oats to a blender or food processor: Start with 1–2 cups of oats. Use more or less depending on your needs.
Blend until fine: Blend or process on high speed for 30–60 seconds until the oats turn into a fine powder. Pause to scrape down the sides if needed.
Store: Transfer to an airtight container and store at room temperature for up to 3 months or in the freezer for up to 6 months.

Best Oats to Use: Rolled oats or quick oats work best for a fine, soft flour.
Equipment Tips: A high-speed blender (like a Vitamix) or food processor will give you the finest texture. A spice grinder works well for small batches.
Storage: Keep in a sealed jar or container in a cool, dry spot. For longer storage, freeze and bring to room temperature before use.
Gluten-Free Tip: Use certified gluten-free oats to ensure the flour is truly gluten-free.
Oats to Flour Ratio: 1 cup rolled oats yields about ¾ cup oat flour. Always measure after grinding for accuracy in baking.
Have questions? Be sure to check out the FAQs section located just below the recipe card. I've covered the most common oat flour questions there.
Wondering what you can make with oat flour? I’ve shared plenty of ideas and links throughout this post, especially here where you’ll find some of my favorite oat flour recipes!