Layer in order given in large bowl.

1 head shredded lettuce, cut with knife
1/4 c. sliced green onions
1/4 c. chopped celery
1 can drained sliced water chestnuts
1 (10 oz.) pkg. frozen peas, do not cook and don't thaw completely
1 1/2 to 1 3/4 c. mayonnaise, spread over peas

Sprinkle layered salad generously with Parmesan and Romano cheeses. Cover tightly and refrigerate overnight. Toss just before serving.