Preheat your oven to 350 degrees and grease a 9 inch baking dish.
In a large mixing bowl combine your dry ingredients (flour, sugar, brown sugar, baking soda, salt, cinnamon, and nutmeg). Stir well with a large spoon.
Next, add in your wet ingredients and mix well with a hand mixer.
Pour the batter into the baking dish.
Next, in a medium bowl combine the ingredients for the topping (brown sugar, butter, cinnamon, and flour). Use a pastry cutter or two forks to combine and press into the ingredients until the topping is pea sized.
Sprinkle the topping over the batter and bake for 30 to 35 minutes or until a toothpick comes out clean from the middle of the cake.