1/2 cup soft butter
1/2 cup shortening
1 cup brown sugar
1/2 cup sugar
2 eggs
1 1/2 teaspoons vanilla
2 1/4 cups flour
1 teaspoon salt
1 teaspoon baking soda
1 cup old-fashioned oats
1 cup semisweet chocolate chips
1 cup mini marshmallows

in a large mixing bowl, cream together butter, shortening, and sugars. add the eggs. beat in the vanilla. add flour, salt, baking soda, oats, and chocolate chips. drop by spoonfuls onto a greased cookie sheet. bake at 350° for 9 minutes. push some marshmallows into each cookie and continue baking 2-5 more minutes until done. let sit on cookie sheet for 1 minute before removing to a wire rack.