Preheat oven to 350°F

Prepare a 9x13 pan by spraying with non-stick cooking spray (I use PAM Baking Spray with flour).

In a large bowl, stir together the vegetable oil, sugar, vanilla and eggs with a wooden spoon until well incorporated.

Add the baking powder, cocoa powder, salt and all purpose flour to the bowl, stirring continuously until the batter is well blended.

Pour into the prepared pan and bake for 30 minutes, or until the sides of the brownies start to pull away from the pan.

Cool, then cut into squares and enjoy!