Whether you’re a seasoned baker looking for a new challenge or an adventurous new baker who wants to start experimenting with something other than all-purpose flour, this article’s for you. We’re here to compare mighty wholesome oat flour — made of ground rolled oats —with gentle and adaptable whole wheat pastry flour — made with soft wheat. We’ll tell you everything you need to know about them both, including how their fare in baking and their nutritional content.
Comparing oat flour vs whole wheat pastry flour
| Oat flour | Whole wheat pastry flour | |
| Substitution ratio vs all-purpose flour | 100% swap with all-purpose if done by weight. If done by cup, you need 1 â…“ cup of oat flour for every 1 cup of all-purpose | 100% all-purpose can be swapped with 100% whole wheat pastry flour, but it works better in light baked goods rather than breads. |
| Gluten-free? | Yes* | No |
| Keto-friendly? | No | No |
| Paleo-friendly? | No | No |
| Common allergens | None | Wheat |
| Liquid absorbency | High | Medium |
| Pantry shelf life (unopened/sealed) | 2 months | 3 – 6 months |
| Best for baking… | Dense baked goods like pancakes, bread, and muffins | Cookies, pancakes, muffins, brownies, pie crusts |
*Check the label/ingredients to determine gluten-free status
Differences between oat flour and whole wheat pastry flour
Although whole wheat pastry flour is lower in gluten, it’s still made with a type of wheat, which makes it not gluten-free. It does make it more suitable for those who can tolerate gluten, however. Oat flour, on the other hand, has the benefit of being gluten-free and common-allergen-free. Neither is keto nor paleo-friendly.
Whole wheat pastry flour can be swapped 1:1 with all-purpose flour in recipes but works best in light baked goods rather than breads because of its low gluten content. For oat flour, a 1:1 ratio is only recommended when using a weight-based approach for accurate results. If using cup measurements, you would need 1 â…“ cup of oat flour for every cup of all-purpose flour.
Baking with oat flour vs baking with whole wheat pastry flour
Both oat flour and whole wheat pastry flour will bring certain nuances to your final bake. For instance, baking with oat flour will yield a slightly denser, moist, and chewy texture, while whole wheat pastry flour will bring forth a delicate bake outcome. Its light texture makes it perfect for flaky and tender cakes, pastries, and pie crusts—as you can tell by its name. Oat flour is more for traditional goods like cookies, muffins, and quick breads, giving them a wholesome twist.
While oat flour pairs best with cinnamon, dried fruits, and nuts, whole wheat pastry flour works in harmony with honey, spices, and fruit to create a nice balance between rich and delicate. That’s because oat flour is naturally subtly nutty and sweet, and whole wheat pastry flour is nutty but earthy.
Both flours behave differently in terms of absorbency—whole wheat pastry flour is more balanced, with a medium absorbency that creates a cohesive dough or batter. Oat flour has a strong affinity for moisture, absorbing more liquid that may require adjustments to your recipe.
Ingredients in oat flour vs whole wheat pastry flour
Oat flour is made of finely ground oats, while whole wheat pastry flour consists of whole wheat grains that are finely milled into a flour. It retains the bran and germ parts of the wheat kernel, which are usually removed in the refining process of all-purpose flour. This gives it a lot more nutrition and a more distinct texture and flavor.
Oat flour + whole wheat pastry flour nutritional facts
| Per ¼ cup serving | Oat flour | Whole wheat pastry flour |
| Calories | 120 | 110 |
| Carbs | 22 g | 23 g |
| Fiber | 3 g | 3 g |
| Sugar | 0 g | 0 g |
| Fat | 2 g | 0.5 g |
| Protein | 4 g | 4 g |
| Glycemic index score | 44 | Likely moderate – high |
The base nutrition of both flours is quite similar in nature. Per ¼ cup, both have 4g of protein, 0g of sugar, and 3g of fiber. They differ ever so slightly on calories (120 for oat vs 110 for whole wheat pastry flour), fat (2g vs 0.5g), and carbohydrates (22g vs 23g). But while oat flour has a low glycemic index score, whole wheat pastry flour likely has a moderate to high glycemic index score, which may be a concern for those watching their blood sugar levels.
Oat flour vs whole wheat pastry flour storage
Oat flour tends to have a shorter storage life of 2 months thanks to its natural oils that can deteriorate the quality over time. Whole wheat pastry flour has a little bit of a longer shelf life ranging from 3 to 6 months.
Oat flour + whole wheat pastry flour alternatives
The alternatives for whole wheat pastry flour are quite straightforward. If you can’t find the whole wheat variation, regular pastry flour will do the trick. For those looking for a gluten-free alternative, you can simply look for a gluten-free pastry flour. The best keto and paleo-friendly option is a personal favorite of mine—coconut flour.
For oat flour, a blend of buckwheat flour and white rice flour will mimic the flavor and texture best, while the best keto and paleo-friendly option is also coconut flour!
Oat flour vs whole wheat pastry flour: What’s the verdict?
While there’s no reason you can’t experiment with either in any recipe, my personal opinion is as follows: oat flour for dense and wholesome goodness in classic bakes and whole wheat pastry flour for delicate and balanced. I love using oat flour as a healthy and more elevated sub for all-purpose flour and whole wheat pastry flour when I’m making amazing pastries like anything requiring puff pastry and the like.
Looking to branch out even more and check out other flour alternatives? Check out our breakdown of 61 different flours.
FAQ
Oat flour is a versatile substitute, but it might not be an exact 1:1 replacement for whole wheat pastry flour because of their different textures and gluten content. Oat flour tends to be denser and lacks gluten, which can affect the rise of baked goods.
The key difference lies in their texture. Regular whole wheat flour has a coarser texture and a stronger flavor that makes it suitable for heartier baked goods like bread, while whole wheat pastry flour is lighter and finer.
