Mix all the ingredients for the cake in a mixer for 7 minutes (this is key to make the pudding set). I love to use my Kitchen Aid mixer for this!
Meanwhile, mix together brown sugar, cinnamon and pumpkin pie spice in a bowl.
Once the cake is done mixing for 7 minutes, pour half of the batter in the greased 9x13 metal pan. Sprinkle 1/2 of the brown sugar mix over the cake in the pan.
Pour the remaining batter on and sprinkle with remaining sugar. Use a knife to swirl the topping with the batter.
Place in oven and bake 25-35 minutes or until the cake is set and is pulling away from the edges. Let it completely cool so it doesn't crumble when you cut and serve it.