In your microwave safe dish, combine the mashed banana, pumpkin puree, egg, pumpkin pie spice or cinnamon, and milk. Mix until well combined.
Cube up your bread and add it into the mixture making sure each pieces is coated.
Microwave on high for about 3-4 minutes, or until the egg is cooked through. Check to make sure it’s firm and set.
Let it cool slightly. Cut and serve!