Preheat oven to 350°F (176°C). Spray a 9 x 13 inch baking pan with non-stick baking spray.
In a medium bowl, sift the flour, spices, baking powder, baking soda and salt. Whisk to combine. Set aside.
In a large bowl, combine granulated sugar, brown sugar, vegetable oil, eggs, pumpkin and vanilla extract. Using an electric mixer, beat on medium speed until well incorporated.
Pour flour mixture into pumpkin mixture and mix on low speed until just combined.
Pour batter into prepared pan. Tap pan on counter several times to release any air bubbles.
Bake in preheated oven for 30-35 minutes, or until a toothpick inserted into the center of the cake comes out clean. Place cake on a wire rack to cool completely in pan.