Shrimp Mac & Cheese Salad

Shrimp Mac & Cheese Salad 4 cups uncooked elbow macaroni 1/4 cup butter, cut up 1/4 cup all-purpose flour 1-1/2 cups half-and-half cream 4 ounces Gouda cheese, shredded 1/2 cup shredded cheddar cheese 1/2 cup shredded part-skim mozzarella cheese 2 pounds peeled and deveined cooked medium shrimp, cut into pieces 1 cup chopped onion 1 cup chopped sweet red pepper 1 cup mayonnaise 1/2 cup chopped celery 1/2 cup chopped dill pickle 1/8 teaspoon salt 1/8 teaspoon pepper 8 lettuce leaves Cook macaroni according to package directions; drain and set aside. Meanwhile, in a large saucepan, melt butter. Stir in flour until smooth; gradually add cream. Bring to a boil; cook and stir for 2 minutes or until thickened. Remove pan from heat; stir in cheeses until melted. Add macaroni; stir to coat. Transfer to a large bowl; cool to room temperature. In another large bowl, combine the shrimp, onion, red pepper, mayonnaise, celery, pickle, salt and pepper. Fold in cooled macaroni mixture; cover and chill. Serve on lettuce.