Thick & Gooey Brownies

0 Preheat the oven to 325° and line a 9x9 pan with parchment paper. Set aside. 
1 In a small sauce pan over medium heat, melt butter. Once melted, add sugar and stir for 1-2 minutes. Sift in the cocoa powder, stir and let in cool for about 5 minutes.
2 Pour into a large bowl and add eggs one at a time, mixing well. Add in the vanilla and coffee. Add in the flour, cornstarch, and salt and mix until no flour packets remain.
3 Fold in the chocolate chunks and pour into prepared pan.
4 Bake for 25-35 minutes or the center is set. The toothpick test doesn't work well on these brownies because of the chocolate chunks.
5 Let fully cook before removing from pan and cutting.