Creamy Spinach Dip

1 pk. frozen spinach
1 container sour cream
1 cup mayonnaise
1/2 t celery salt
1/2 t dried dill weed
1/4 t onion salt
1/4 c chopped green onions
1 can water chestnuts, drained finely chopped
1 jar diced pimientos, drained

Cook spinach as directed on package. Cool slightly; squeeze to drain well. Meanwhile, in medium bowl, combine sour cream, mayonnaise, celery salt, dill and onion salt; blend well.
Stir in cooked spinach, onions, water chestnuts and pimientos. Cover; refrigerate at least 2 hours to blend flavors