pumpkin chocolate-chip squares

i had hoped these would turn out more cookie-y than cake-y but they're not bad =)

recipe from marthastewart.com

ingredients:
2 cups all-purpose flour
1 T pumpkin-pie spice

1 tsp baking soda
3/4 tsp salt
1 cup unsalted butter

1 1/4 cups sugar
1 large egg
2 tsp vanilla extract
1 cup canned pumpkin puree
1/2 package (6 ounces) semisweet chocolate chips

directions:
1. preheat oven to 350 degrees. line bottom and sides of a 9-by-13-inch baking pan with parchment paper.

2. in a medium bowl, whisk together flour, pie spice, baking soda, and salt; set aside.
3. cream butter and sugar until smooth; beat in egg and vanilla until combined. beat in pumpkin puree. mix in dry ingredients until just combined. fold in chocolate chips.
4. spread batter evenly in prepared pan. bake 35 to 40 minutes. cool completely in pan.