As far as I can remember we seem to have this appetizer at Thanksgiving and Christmas dinners at our house. I've continued the tradition in my own home and it's still an easy crowd pleaser.
1 box of Ritz crackers
8 oz cream cheese
1/2 a bottle of Heinz shrimp cocktail sauce
1/4 cup of cocktail shrimp or chopped shrimp.
Place cream cheese on a plate. Top with cocktail shrimp and cocktail sauce. Serve with Ritz crackers.
For a prettier presentation see picture below.