Preheat oven to 350F
Butter 9x13 pan, then put in parchment paper so that the edges are up over the long sides of the pan (you'll be able to lift out the brownies using the parchment paper
Cut up the chocolate bars to put on top of the brownies, does not have to be consistent sized. 70% coco is good. Or use good quality chocolate chips.
Sift all dry ingredients into a large bowl using a wisk and fine mesh strainer
Wisk wet ingredients to combine
Add wet ingredients to dry ingredients, using spatula to combine until just smooth with no lumps
Pour into the prepared pan
Cover with chopped chocolate or chocolate chips
Bake in preheated 350F oven for about 20 minutes, or until tooth pick comes out with some mix on it, but not a wet glob.