Try using toasted, chopped walnuts as a coating for chicken or fish, or as a topping for casserole dishes. Alternatively, experiment with a fifty-fifty mixture of breadcrumbs and nuts, recommends Ditkoff. Each quarter-cup serving of walnuts delivers 4 grams of protein, plus 2.5 grams of omega-3 fatty acids. And honestly? The rich, nutty flavor and crunchy texture is delicious. Seriously, we’re drooling over this walnut-crusted halibut recipe.