Like most people, Erik's 'neutral' expression was less neutral than it felt on the person making it. Unless he were making the effort to school his features into something else, his face at rest looked a little grim, which probably surprised no one. But he lightened a bit when the kitchen doors opened (which was deliberate; he didn't make a habit of being sneaked up on by anyone, so he had heard her approach a few seconds before), and from there his features softened into something that could even be called 'pleased.'
"Raven," he tipped back, the slight incline of his head passing for a nod of greeting, "You look wonderful."
Saying this involved turning to her from over his shoulder at the counter, where he was ...for lack of a better word manhandling chicken breasts; Erik's cooking involved a lot of fairly lethal looking deftness. "Sit down, this'll be done in a minute."