I think this is one of the best oatmeal cookie recipes I have ever used..
Hope you guys like them..

I always add about a cup of raisins plumped in hot water or coffee..

Soft Oatmeal Cookies

Prep Time: 15 Minutes
Cook Time: 10 Minutes Ready In: 2 Hours
Yields: 24 servings
"These oatmeal cookies are very moist with a good flavor. Add a cup of raisins or nuts if you desire."
INGREDIENTS:

1 cup butter, softened
1 cup white sugar
1 cup packed brown sugar
2 eggs
1 teaspoon vanilla extract

2 cups all-purpose flour
1 teaspoon baking soda
1 teaspoon salt
1 1/2 teaspoons ground
cinnamon
3 cups quick cooking oats

DIRECTIONS:
1. In a medium bowl, cream together butter, white sugar, and brown sugar. Beat in eggs one at a time, then stir in vanilla. Combine flour, baking soda, salt, and cinnamon; stir into the creamed mixture. Mix in oats. Cover, and chill dough for at least one hour.
2. Preheat the oven to 375 degrees F (190 degrees C). Grease cookie sheets. Roll the dough into walnut sized balls, and place 2 inches apart on cookie sheets. Flatten each cookie with a large fork dipped in sugar.
3. Bake for 8 to 10 minutes in preheated oven. Allow cookies to cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.

I really think it is I have always done it that way and you can tell a big difference in the dough after chilling it.
It gets a lot stiffer and even with the cold dough they don't take very long to bake.