Lightly sauté cod in margarine over medium - high heat for about 1 minute on each side. Combine remaining ingredients to form a paste. Top cod with herb paste and place under broiler in oven for about 3-5 min., until a crust forms on top. Serve with pureed butternut squash and grilled onions. Squash: Chop 1 butternut squash and boil until tender, drain and purée in blender. Stir in maple syrup and seasonings to your taste. Onions: Cut one large red onion into rings. Brush lightly with extra virgin olive oil and salt & pepper (to taste). Grill (or sauté) until onions soften.