Kareem couldn't smell burning, and he had like the super panther nose and everything, so he was pretty sure that the cookies were okay. He just wanted to make sure that he got to them before they got beyond that.
And if Andy didn't want to let go of his hand? No problem. He had super-strength; he was pretty sure he could pull a cookie sheet out of the oven without hurting himself. It took him a second to wriggle into the oven mitt without using his other hand, but once he's managed that, he easily opened the door and took out the two trays of cookies. “They look okay to me,” he said. “Better then okay. They look good.”