1Place oats in large bowl. Stir together melted butter and brown sugar. Pour sugar mixture over oats. Let stand at room temperature at least 8 hours or overnight so oats absorb butter.
2Heat oven to 375°F. Generously grease cookie sheets with shortening.
3Add remaining ingredients into oats; mix well. Drop level teaspoonfuls of dough 2 inches apart onto cookie sheets, 12 per sheet.
4Bake 5 to 7 minutes or until brown around edges. Cool 2 to 3 minutes on cookie sheets or until firm; remove from cookie sheets to cooling racks.