Preheat oven to 350°F. Grease a 9 inch x 9 inch metal baking pan. Add all ingredients into a large bowl and mix until batter is smooth. Pour into baking pan and smooth top with spatula.
Bake for about 15 minutes until toothpick inserted comes out clean. Be careful not to bake too long otherwise brownies will dry out. Let brownies cool and set before cutting and serving.