Add egg to mug and beat slightly. Put a splash of vanilla and dash of salt. Adding the salt with the wet ingredients helps it to dissolve especially when using course salt. It will be gritty otherwise. Mix brown sugar or Xylitol in with the wet ingredients. Next add your oat flour, baking soda, pumpkin pie spice, coconut oil and pumpkin puree. Mix until blended then cook in the microwave on high for 1 minute and 30 seconds. I have found that to be the perfect amount of time. Any longer and it will be too dry.