Place the shrimp, scallops, and cream in a food processor and blend for ... Transfer the pasta to the sauce, finish with Parmesan, and toss to coat. Season with salt and pepper.
Add the ketchup, horseradish and Worcestershire sauce; pulse to combine. Scrape into a serving dish and refrigerate at least 30 minutes or up to 4 hours. For the shrimp: Preheat the oven to 425˚.