In a large bowl, combine the cake mix, pumpkin, eggs, sugar, oil and pumpkin pie spice; beat on low for 30 seconds. Beat on medium for 2 minutes. Pour into a greased 15 in. x 10 in. x 1 in. baking pan.
Bake at 350 degrees F for 25-30 minutes or until a toothpick inserted near the center comes out clean. Cool on a wire rack.
In a small bowl, beat frosting and cream cheese until smooth; spread over cake. Store in refrigerator.
Tested in the THASCkitchen. Photo by THASC. THASC is a unique small American business producing cards and other promotional products. www.thasc.com