In a medium-sized microwavable bowl, whisk protein powder into almond milk, applesauce, and gingerbread syrup. Add oats, spices, and peanut butter and continue to whisk until well-combined.
Microwave oat mixture for 1 minute, remove to stir, then continue cooking for 1 minute. If oatmeal hasn't thickened to desired texture, repeat one more time for a total cooking time of 3 minutes. Divide into two bowls, add optional toppings, and serve.
See recipe below for gingerbread syrup.