In a high-speed blender, combine old-fashioned rolled oats, a large egg, an over-ripe banana, nut butter, almond milk, vanilla extract, baking powder, and ground cinnamon. Blend on high for 20-40 seconds until the mixture is smooth and creamy, resembling a pancake batter.

Once the base is blended, transfer the mixture to a mixing bowl and stir in your choice of mix-ins such as chocolate chips or blueberries.

Pour the combined mixture into a well-greased microwave-safe ramekin or a large mug.

Place your ramekin in the microwave and cook on high for 90-120 seconds, checking at the 90-second mark for doneness.

Once cooked, let the oats sit for a minute to cool slightly before serving. Top with additional favorites like a dollop of peanut butter, fresh fruits, or a drizzle of honey.