Preheat your oven to 350 degrees and set out an 8 x 8 baking dish.
In a large bowl, add the flour, brown sugar, cocoa powder, baking soda, and salt and stir to combine.
Add in the wet ingredients and again stir to combine.
Stir in the chocolate chips.
Pour into the 8 x 8 baking dish and bake for 35 minutes or until a toothpick inserted into the center comes out clean.
Once cooled, sprinkle with powdered sugar and serve.