This cozy autumn-inspired sheet pan salmon features maple-roasted Brussels sprouts, tender apple slices, and crunchy walnuts, all brought together with a tangy cider-mustard sauce. The result is a perfectly balanced dish—sweet, savory, and just a little nutty—that captures the essence of fall’s harvest. Packed with heart-healthy fats, seasonal produce, and bold Nordic flavors, it’s a one-pan dinner that’s as nourishing as it is satisfying.