Fill medium pot with enough water to cover sausages and bring to a simmer. Add sausages and cook, maintaining a simmer, for 15-20 minutes or until internal temperature reaches 165°F on an instant-read thermometer. Set aside.
Prepare jerk shrimp according to package directions in an oven-safe skillet. Remove shrimp to a plate. Do not discard sauce.
Add onion, pepper, celery, garlic and tomato to shrimp sauce and cook over medium high heat until the veggies soften, about 3 minutes.
Chop cooked sausage.
Add sausage, shrimp and cream cheese. Stir to mix well.
Top with shredded cheese.
Place skillet on middle oven rack and broil 2-3 minutes or until cheese is melted.
