Preheat oven to 350 degrees F. Lightly coat an 8x8-inch (or 9x9) baking dish with nonstick cooking spray.
In a large bowl, combine all ingredients and mix until smooth. Pour into prepared dish and smooth top with spatula.
Bake for 25-30 minutes, or until a toothpick inserted comes out clean. Be careful not to over-bake, otherwise brownies will dry out. Let cool before cutting and serving.