It is done when the top is golden and a toothpick or tip of a sharp knife inserted in the center comes out clean. (onedishkitchen.com)
Always test to see if the brownies are done by inserting a toothpick or the tip of a sharp knife in the center and if it comes out slightly sticky, they're done. (onedishkitchen.com)
Test with the tip of a sharp knife for doneness. (beyondthepeel.net)