Preheat the oven to 350 degrees F. Lightly grease a 9-x-13-inch baking dish and set aside.

In a large mixing bowl, mix eggs, oil, milk and vanilla together.

Add dry ingredients to the wet ingredients and mix well. Pour half the batter into the prepared baking dish.

In a medium bowl, combine brown sugar and cinnamon and mix well.

Sprinkle half of the cinnamon sugar on top of the batter. Top with remaining batter, by carefully pouring the batter over the cinnamon sugar layer. Sprinkle the remaining cinnamon sugar mixture over the top.

Bake for 35–40 minutes and serve warm.