Preheat oven to 375 degrees F. Lightly grease a loaf pan for thicker brownier or a 8x8 baking dish for thinner brownies and set aside.
In a medium mixing bowl, combine dry ingredients (flour through salt). In a separate small bowl, stir together wet ingredients (eggs through milk).
Add wet ingredients to the dry and stir until moistened. Stir in the chocolate and nuts, if using.
Spread the batter evenly into the prepared baking dish. If desired, sprinkle additional nuts/chocolate on top. Bake for 16-20 minutes until cooked through. Let cool in pan for atleast 15 minutes prior to cutting.