Layered Tuna Casserole

Ingredients

• 6 oz (3 cups) uncooked wide egg noodles
• 1 12 oz can tuna (packed in water) drained
• 1 8 oz can sliced water chestnuts, drained
• 1/2 cup chopped celery
• 1/3 cup sliced green onions
• 1/2 teaspoon dried thyme leaves
• 1/4 teaspoon salt
• 1/2 cup mayonnaise (I used 3/4 cup)
• 1/2 cup dairy sour cream (I used 3/4 cup)
• 1 cup sliced zucchini
• 3 - 4 tomato slices
• 1 cup or more (to taste) of shredded Moneterey Jack (or Cheddar, or mix) cheese