Break broccoli and cauliflower into florets, place in large shallow dish with pepper, cover, cook on HIGH for 3 minutes; drain.
Melt butter in the same dish on HIGH for 1 minute, stir in flour then milk, cook on HIGH for about 2 minutes or until mixture boils and thickens; stir occasionally. Stir in cream and cheese, then vegetables and tuna.
Melt extra butter in a small bowl on HIGH for 15 seconds, stir in kibble, parsley and paprika. Sprinkle over tuna mixture, cook on HIGH for about 5 minutes or until heated through. Serves 4.