Layer the following in a large bowl or 9"x13" pan.

1 head shredded lettuce
1 pkg. frozen peas (thawed & cold)
2 stalks diced celery
1 diced onion
1 lb. bacon, cooked & diced, at least 5 strips
Salt & pepper

Spread at least 1/4 to 1/3 cup mayonnaise over the top to seal the salad. Add 1/2 teaspoon sugar and Parmesan cheese. Cover tightly. Refrigerate overnight. Toss before serving.