Preheat oven to 350 degrees. Grease a 9-inch by 9-inch square pan.
In the bowl of a standing mixer cream together butter and sugar.
Add egg and pumpkin; beat to combine fully.
In a separate bowl, stir together flour, spices, baking soda.
Slowly add into butter-sugar-pumpkin mixture until combined.
n low speed blend raisins and pecans until fully combined.
Pour batter into the prepared pan and smooth out batter to be even.
Bake for 25 to 30 minutes, until lightly browned and a toothpick inserted comes out clean.
While the bars are baking prepare the Orange Glaze. Whisk together the powdered sugar and orange juice. When the cake is just out of the oven, brush on the glaze while it is still warm.
Allow to cool. When fully cooled, cut into bars.