Here are three that look really delicious I got them from another website with recipes. I'm not sure if I can say which web-site it is, but everyone rated all three of these as delicious! Let me know how they turn out for you.

Chocolate Chunk Oatmeal Cookies

1 (18.25 ounce) package white cake mix
1 (3.5 ounce) package instant butterscotch pudding mix
2/3 cup rolled oats
1/2 cup vegetable oil
1/2 cup sour cream
1/4 cup water
2 teaspoons vanilla extract
1 cup semisweet chocolate chipsPreheat oven to 350 degrees F (175 degrees C). Lightly grease cookie sheets. In a large bowl, stir together cake mix, instant pudding, and rolled oats. Add oil, sour cream, water, and vanilla; mix until smooth and well blended. Stir in chocolate chips. Roll dough into 1 1/2 inch balls, and place 2 inches apart on the prepared cookie sheets. Bake for 8 to 10 minutes in the preheated oven. Allow cookies to cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.

Chewy Oatmeal Cookies

1 cup butter, softened
1 cup packed brown sugar
1/2 cup white sugar
2 eggs
2 teaspoons vanilla extract
1 1/4 cups all-purpose flour
1/2 teaspoon baking soda
2 teaspoons ground cinnamon
1 teaspoon salt
3 cups quick cooking oats
1 cup chopped walnuts

Preheat the oven to 325 degrees F (165 degrees C). In a large bowl, cream together butter, brown sugar, and white sugar until fluffy. Beat in eggs one at a time, then stir in the vanilla. Combine the flour, baking soda, salt, and cinnamon; stir into the creamed mixture. Mix in oats and nuts until just blended. Drop by heaping teaspoonfuls onto ungreased cookie sheets. Cookies should be at least 2 inches apart. Bake for about 12 minutes in the preheated oven. Cool cookies on a wire rack.

Soft Oatmeal Cookies

1cup 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

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.
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.
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.