In a high-speed blender, add your old-fashioned rolled oats, egg, ripe banana, nut butter, almond milk, vanilla extract, baking powder, and ground cinnamon. Blend until smooth.

Gently fold in your favorite mix-ins such as chocolate chips or fresh blueberries.

Pour the prepared mixture into a greased microwave-safe ramekin or mug, spreading it evenly.

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

Once cooked, let cool for a minute and serve warm topped with yogurt, fresh fruit, or nut butter.