Oat Flour
A light, whole-grain flour made from finely ground oats, adding a sweet, nutty flavor to baked goods.
1 Cup Oat Flour = 92g (3.25 oz) • 1 Cup Rolled Oats = 90g (grinds into ~3/4 cup flour)
Oat flour is a whole-grain flour made from finely ground whole oats (Avena sativa). It has a light, powdery texture and a mild, sweet, and nutty flavor profile. Although oats are naturally gluten-free, oat flour lacks the structural gluten protein found in wheat. Consequently, it cannot build an elastic dough network on its own. It does contain beta-glucan, a soluble fiber that absorbs and retains moisture exceptionally well. This water-holding capacity makes oat flour excellent for creating moist, tender crumbs in cakes, quick breads, and cookies, but it can make batters thick and gummy if over-hydrated.
Because oats are frequently processed in facilities that handle wheat, those with celiac disease must ensure they purchase certified gluten-free oat flour. When using oat flour in yeast breads, it must be blended with a high-protein wheat flour (like bread flour) to ensure the dough rises. In quick breads and cookies, it can replace a portion of all-purpose flour to add fiber, nutrition, and flavor.
Substituting oat flour 1:1 by volume for wheat flour. Oat flour is much lighter than all-purpose flour (92g vs 120g per cup), so substituting by volume results in under-floured, wet batters that sink.
Widely available globally. Can easily be made at home by grinding rolled oats in a high-speed blender for 60 seconds and sifting out coarse pieces.
Perfect for pancakes, waffles, muffins, cookies (like chocolate chip), and quick breads to add a soft texture and nutty flavor.
Replace up to 30% of wheat flour in a recipe with oat flour by weight. For gluten-free baking, combine with starches and binders.
Store in an airtight container in a cool, dry pantry for up to 3 months, or freeze for up to 6 months to prevent the natural oils from spoiling.
Related Terms
Recommended Reading
How to Measure Flour Correctly: Spoon & Level vs. Scoop & Sweep
The way you scoop flour can alter your baking by 30%. Learn why the spoon-and-level method is your best bet when you don't have a scale.
Butter Measurements Explained: Sticks, Cups, Grams and Tablespoons
How much is a stick of butter? We break down the math for sticks, cups, grams, tablespoons, and ounces, plus look at European vs. American butter.
Almond Flour vs. All-Purpose Flour: Can You Substitute Them 1:1?
Thinking of swapping all-purpose flour for almond flour? It's not a simple 1:1 trade. Here's how to adjust your recipe with the right ratio, extra eggs, and temp settings for baking success.