Preheat the oven to 300 and grease a glass baking dish (8×8 or 9×9).
Mix together all ingredients. You can do this by hand or with an electric mixer or high-powered blender.
Pour into the baking dish and bake for 30-35 minutes, until a toothpick inserted into the center comes out clean. Cool for 30 minutes before cutting or removing from the pan.
These store well at room temperature or in the fridge for a few days.