Broiled Salmon with Capers and Raisin Butter my favorite

1/2 cup 4 ounces butter
1/4 cup drained capers
1/4 cup golden raisins
4 center-cut skin-on salmon fillets about 6 ounces each
1 to 2 tablespoons butter melted
Salt and pepper
1 12-ounce bag baby spinach leaves
hot boiled or steamed new potatoes

in small saucepan combine butter capers and raisins heat over medium heat just until butter simmers remove from heat let stand to soften raisins and cool slightly about 5 minutes process mixture in blender or small food processor until well blended remove to small bowl keep warm until ready to serve preheat broiler position oven rack so surface of fish is about 5 inches from the heat brush both sides of salmon with melted butter season with salt and pepper line shallow baking pan with aluminum foil arrange fish on pan skin side up broil until skin begins to brown and chars slightly about 2 to 3 minutes turn fish broil just until fish is opaque throughout, about 4 to 5 minutes meanwhile place spinach in large skillet cover and heat over medium heat until spinach just begins to wilt about 4 to 5 minutes stirring occasionally season with salt and pepper to serve place equal portions of spinach onto 4 warm dinner plates place salmon fillets over spinach arrange potatoes alongside drizzle with caper & raisin butter refrigerate any remaining butter to use with cooked chicken or other seafood makes 4 servings