Preheat oven to 350 degrees F.
Grease 9x13" baking pan with cooking spray and set aside.
In a medium bowl, whisk together flour, spices, baking soda, and salt. Set aside.
In large bowl with electric mixer, beat together the butter and both sugars until creamy.
Add egg and vanilla and beat until combined.
Add pumpkin puree and beat until combined.
Reduce the speed to low and slowly add in flour mixture, until combined.
Stir in Rolos.
Pour into prepared pan and spread out evenly.
Bake in preheated oven until the edges start to pull away from the sides of the pan and a toothpick comes out with a few crumbs, approximately 35-40 minutes. Mine took 40 minutes.
Let cool completely.
Cut and enjoy!