Preheat oven to 350 degrees F. Spray a 8″ square baking dish with cooking spray.
Stir together all ingredients until well combined. When you start stirring, you will think there isn’t going to be enough liquid to incorporate the flour. Just keep stirring, and it will come together. Batter will be very thick.
Pour batter (more like dough) into prepared baking dish, and smooth it out as much as possible. Bake in preheated oven for 30-35 minutes, until toothpick inserted into the center comes out clean.
Allow to cool in pan slightly before serving. Try to share!