Rinse and chop the lettuce and cover the bottom of a trifle bowl.
Spread the chopped hard boiled eggs over the pea layer. Sprinkle with salt and pepper.
Chop the green onions and spread over the hard boiled egg layer.
Coarsely chop the tomatoes and spread over the green onion layer. Sprinkle with salt and pepper.
Crumble the bacon over the tomato layer.
Sprinkle the shredded cheese over the bacon layer.
In a bowl whisk the mayonnaise, sour cream and sugar until thoroughly combined. Spread this dressing over the last cheese layer.Spread the dressing all the way to the edges to seal the salad. If you would like to you can sprinkle the top with cheese, bacon and green onions.
Cover the salad with plastic wrap and refrigerate for up to one day before serving.