Homemade oat flour boasts a surprisingly powerful nutritional content. It's rich in soluble fiber (beta-glucan), plant-based protein, and heart-healthy fat. Plus, it's an excellent source of manganese, phosphorus, copper, zinc, calcium, magnesium, vitamin B1, and Vitamin B5. In addition, it may help reduce blood sugar, lower cholesterol levels, and relieve constipation. It would definitely be a wonderful addition to your diet.