Preheat oven to 350 degrees Fahrenheit.
Grease a 9 x 13 oven-safe casserole dish.
In a large bowl mix the white sugar, brown sugar, cocoa powder, flour, salt, and baking powder.
In a medium bowl crack the eggs and whip them up, and then add the vanilla extract and butter. When you add the butter make sure it's cooled down a bit after you've melted it so it doesn't start to cook the eggs and cause chunks.
Add your wet ingredients into your dry ingredients and mix well. The batter is going to be thick.
Pour your chocolate chips into the bowl and mix them in gently. Don't overmix.
pour the batter into your prepared baking dish. You'll want to run a spatula over it to flatten it.
Put in the oven and bake for 25 minutes or until a toothpick comes out with just a few crumbs on it. The edges will be firm but the center should be on the softer, moister side.
Let the brownies sit for about 2 minutes, and then gently push in the candy corn into the tops of the brownies.
Let the brownies cool completely and then serve!