Step one. Preheat your oven to 350 degrees F
Step two. In a medium bowl mix eggs, sugar, oil and the pumpkin puree with an electric mixer until combined. Step three. In a separate bowl sift together the flour, baking powder, baking soda, cinnamon and salt. Then stir dry mix into the wet pumpkin mixt until thoroughly combined.
Step four. Spread the batter evenly into greased 10×15inch pan. Bake for 25 to 30 mins. Cool for at least half hour before frosting.
Step five. To make the frosting mix together the cream cheese and butter. Add vanilla. Add confectioners' sugar a slowly a little at a time, beating until smooth. Spread evenly on top. Cool once more in the fridge for 15 minutes and then cut evenly into squares.