Award Winning Pumpkin Cookies

A lady in my Grandma's ward came up with this recipe, entered it in a contest, and won first place.

Pumpkin Coookies
4 c. flour
2 tsp. baking soda
2 tsp. cinnamon
Shake of Nutmeg
1 tsp. salt
3 cubes butter
2 c. firm packed brown sugar
1 c. coconut
1 c. sugar
1 egg
1 tsp. vanilla
16 oz. Solid packed pumpkin (canned)
2 c. chocolate chips
2 c. walnuts, coarsely chopped

Bake @ 350 degrees for 20 minutes. (After first couple batches, reduce time by a couple minutes and cookies are rounder if you refrigerate dough first - I didn't in picture)

Topping
1 lb. powdered sugar
1 cube butter
1 tsp. vanilla
Half and half cream (opt. canned milk)
Orange zest