Heat oven to 350°F. Grease 9x9 2" baking pan.
On medium low temperature, heat the bourbon in a saucepan until all the alcohol is cooked off. Add in the 1/4 Cup of Chocolate Chips. Stir until completely melted and set aside.
In a mixing bowl, combine the flour, cocoa powder, baking powder and salt. Mix homogenously.
Using a mixer or whisk, combine the eggs, brown sugar, vanilla and the chocolate bourbon mixture. Gradually add in the dry ingredients from the mixing bowl and stir to mix evenly, making sure there are no lumps. (You may add nuts.) Pour in baking pan and bake for 30 min or until done.
Take out from the oven and rest to cool.