Preheat the oven to 350F and line/oil a standard muffin tin or 12 silicone baking cups. In a large mixing bowl, combine all of the ingredients and stir well with a whisk to break up any clumps.
Divide the batter, then bake at 350F for 25 to 30 minutes, until the edges are golden and the centers are firm. Allow to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.