Get out and measure all of your ingredients.
In a medium sized bowl combine cream cheese, sour cream, crab and mayonaise.
Using a handheld or stand mixer blend together until totally combined.
Next, grab a 13x9 inch pan and spread cream cheese mixture across the bottom, as evenly as possible.
Sprinkle shrimp over top of the cream cheese mixture, again, as evenly as possible.
Continue with seafood sauce.
Onions and then tomatoes. In that order.
Refrigerate until ready to eat!
Serve with chips or your favorite crackers for scooping. Enjoy!