Cod is high in fatty acids but not high in mercury, meaning it has great benefits but is still baby safe when eaten in moderation. Steaming is one of the healthiest ways to prepare fish, minimizing butter or oil and showcasing the texture – in this case, a firm, white flesh. This mix piles cherry tomatoes, asparagus, artichokes, and herbs on top, but use any tender seasonal vegetables you like. They’ll all cook together in the pretty little packets