Dissolve lemon Jell-O in the boiling water. Stir in salt and grated onion.
Put the lemon Jell-O mixture into the refrigerator until it begins to set, approximately 15 minutes. If you turn the bowl, and the Jell-O moves as one glob, it is ready.
Meanwhile, in a chilled mixing bowl, whip the heavy cream until firm.
Once the Jell-O is set, add whipped cream, mayonnaise and pimento cheese spread. Beat on low until just incorporated. Be sure not to over beat so that you don't break the heavy cream.
Add the drained tiny shrimp, green pepper and hard boiled eggs; stir until completely mixed.
Chill until set, approximately 3 to 4 hours.
Serve with crackers or as a sandwich.
Notes
The nutritional information below is auto-calculated and can vary depending on the products used.