Cinnamon Roll Pumpkin Sheet Cake

One of my favorite blogs in my Google Reader is Jenny from Picky Palate. She recently posted a recipe for this Cinnamon Roll Pumpkin Sheet Cake. Pardon the picture, I dropped my camera and it sustained an injury so I took this with my Blackberry. We had a party at work for Halloween and I took this for dessert. Our theme was a Slumber Party and we all wore our comfy pajama pants and slippers to work. We had a popcorn machine and we hooked up a DVD player to a projector and watched Poltergeist. We also had nachos and pizza. It was a fun day and we all decided we'd love to wear our pajamas every day to work!

CINNAMON ROLL PUMPKIN SHEET CAKE

1 box yellow cake mix
4 eggs
1/2 cup canola or vegetable oil
1/2 cup milk or buttermilk
3.4 ounce box Vanilla Instant Pudding Mix
1/2 cup sour cream
15 ounce can pumpkin
1 stick (8 tablespoons) unsalted butter
3/4 cup packed light brown sugar
1/2 teaspoon ground cinnamon
3/4 cups powdered sugar
1/4 cup heavy cream or milk

Preheat oven to 350 degrees F. and spray a large jelly roll pan with nonstick cooking spray.
Place cake mix, eggs, oil, milk, pudding, sour cream and pumpkin into a stand or electric mixer, beating until well combined, about 1 1/2 minutes. Pour into prepared pan, spreading evenly.
Place butter into a microwave safe bowl and melt, about 30-40 seconds. Add brown sugar and cinnamon to bowl, mixing until combined. Drizzle mixture evenly over cake then take a knife and run it through to swirl.
Bake cake for 30-35 minutes, until cooked through and remove. Place powdered sugar and cream into a large bowl and mix until creamy and smooth. Drizzle over warm cake then let cool for 20 minutes before cutting into squares. Refrigerate if not serving same day.