Preheat the oven (or toaster oven) to 350 degrees.
Combine all of the ingredients in a medium bowl.
Spray desired oven-proof serving dish with cooking spray.
Evenly distribute the batter.
Bake for 20-30 minutes (depending on the size you choose). It should be a soft muffin consistency and done to the center.
Allow to cool for a few minutes before serving.
NOTE: This makes 1 serving, but can be easily doubled, tripled, etc.