Shrimp Butter

8 ounces cream cheese
4 tablespoons mayonnaise
1 stick (1/2 cup) butter, melted
1 small onion, grated
Juice of 1 lemon
1 small package ready-cooked shrimp, chopped

Beat cream cheese and mayonnaise until fluffy. Add melted butter slowly. Add lemon juice and onion, then shrimp.

Serve heaped in small bowl surrounded by crackers.