Favorite Pumpkin Spice Sheet Cake

1 1. Preheat oven to 350 degrees F.2. Spray cookie sheet with non-stick spray.3. In a large bowl, mix eggs, sugar, vegetable oil, and pumpkin puree until combined. 4. Slowly add in flour, spices, baking powder, soda and salt. 5. Pour batter into prepared baking sheet and spread to an even layer.6. Bake for 25-30 minutes or until set, and then let completely cool.7. For the frosting, cream together cream cheese, butter and vanilla. Add powdered sugar and mix until the frosting is smooth and creamy.8. Spread creamy frosting over the top of cooled cake, and garnish with a dusting of cinnamon. Store in the refrigerator if making ahead for the same day, or freeze cake and allow 2 hours to thaw if making ahead more than 1 day. It is fantastic and would make for the perfect Thanksgiving dessert.