Preheat oven to: 425 degrees (F)
Preheat the oven to 425 degrees. Combine the dry ingredients and whisk together. Add the milk, oil, and eggs, and blend with a hand mixer. Use a buttered 9"x9"x2". Pour in the batter and let it level. Bake for 20 minutes. Remove from the oven and let sit for 5 minutes, then transfer to a wire rack to cool.