Preheat oven to 375 degrees. Line a baking sheet with parchment paper.
In a medium bowl, combine flour, oats, baking powder and soda, salt, spices
In a large bowl, beat the butter and sugar until combined.
Add the pumpkin, egg and vanilla to the butter/sugar mixture.
Gradually add the dry ingredients to the wet and beat on low.
Fold in the chocolate chips and walnuts or cranberries.
Scoop the dough in heaping tablespoons onto the cookie sheet.
Bake in the center of the oven for 12 minutes until the edges are lightly browned. Remove from the oven and let cool for 5 minutes.