Preheat oven to 375° and line two cookie sheets with parchment paper. Set aside.
In the bowl of stand mixer with paddle attachment, mix butter and brown sugar until creamy. Add Sugar Cookie Mix and spices and beat with butter mixture until well blended. Add eggs and mix until combined. Add the oats and mix well again. Add raisins and walnuts, if using, and mix completely.
Drop 12 heaping tablespoon-size scoops of dough onto each cookie sheet. Bake for 12 to 18 minutes, until edges start to brown a little. Before removing cookies, cool completely on pans set on wire racks, or cookies may break.
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