We like to use our 14inch cast iron pizza pan but a larger cookie sheet will work just fine. Spray with a non stick spray. Pour your batter into your prepared pan.
Bake in preheated 350F oven for 20-30minutes depending on your oven. When it gets a nice color on top and toothpick comes out clean, it’s done.
If you want to put a Chocolate glaze on-top nuke some Chocolate chips til melted then stir in milk til well combined. I use a spoon to drop the Chocolate all around the bars. Cool then cut into bars.