Place oats into the container of a high-powered blender and secure lid. Blend for 15 seconds or until they become a fine powder (the consistency of flour).
Pour oat flour into a medium mixing bowl.
Add cornstarch, baking powder, baking soda, salt cinnamon and sugar to the oat flour and stir to combine. Set aside.
Put almond milk, peanut butter, banana, vanilla and egg in the container of a high-powered blender and secure the lid.
Blend on low speed, gradually increasing to high. Blend on high for 15 seconds or until the mixture is smooth.
Add the dry ingredients and blend until smooth.
Let mixture sit for 2-5 minutes to thicken.
Pour mixture into the preheated waffle maker, 1 cup at a time (or whatever amount is appropriate for the size of your waffle maker).
Cook on medium-high heat in your waffle maker for about 4 minutes, or until your waffles reach the optimal crispiness and brownness, which will vary depending on your waffle maker.
Serve warm.
Notes
Ingredient Substitution Notes
Peanut Butter: any nut or seed butter works well in this recipe.
Old-fashioned oats: 1 cup of oat flour is a great substitute for oatmeal. Or, use all-purpose flour.
Cornstarch. tapioca flour or all-purpose flour are goo substitutes.
Whole milk: 2% milk, half and half, almond milk and coconut milk all work great.
Granulated sugar: white sugar, organic cane sugar and coconut sugar are all great choices.
StoreCool leftover waffles completely, then store them in an airtight container in the refrigerator for up to 5 days. Reheat in the toaster.FreezeFreeze these banana oatmeal waffles to keep them fresh. Put cooled waffles in a single layer in an airtight container and freeze for up to 2 months. You can stack them if you separate the layers with waxed or parchment paper.