Pre-heat oven to 350. Grease 15 x 10 jellyroll pan.
Prepare Filling: In small bowl: combine flour, spices, baking powder & baking soda.
In larger bowl: Beat sugar, butter and brown sugar until crumbly. Add eggs, egg whites, pumpkin pie mix and carrots. Beat until well blended. Add flour mixture and mix until well blended. Spread onto greased pan.
Prepare Cream Cheese topping: Mix together cream cheese, sugar and milk until thoroughly blended.
Drop teaspoon-fulls of topping over pumpkin batter and swirl mixture with a butter knife.
Bake for 25-30 minutes or until cake tester (inserted in center) comes out clean. Cool in pan completely on wire rack before cutting into squares.
