Preheat your oven to 180° C (350° F), get out an 8x8 inch baking pan, line with parchment paper, overhanging two sides, and lightly grease the exposed sides with butter.
In a mixing bowl, add the oil, eggs, and vanilla. Whisk together.
Add 1 recipe of Brownie Mix and mix together until just combined.
Pour mixture into the prepared baking pan.
Bake for 20-25 or until desired doneness, less for gooier type brownies, a bit more for cakier type brownies. Remove from oven and and cool pan on a rack for 10 minutes.
After 10 minutes, use a butter knife and cut along the two sides of the pan with no parchment. Use the parchment overhangs and carefully lift out of the pan and place on the wire rack and allow to cool another 10 minutes.
Cut into 9 squares, serve and enjoy.