Pumpkin Spice Frosted Snack Bars

1 pkg. (2-layer size) spice cake mix
1 can (15 oz.) pumpkin
1 cup MIRACLE WHIP Dressing
3 eggs
1 pkg. (8 oz.) PHILADELPHIA Cream Cheese, softened
1/4 cup (1/2 stick) butter, softened
2 Tbsp. milk
1 tsp. vanilla
1 pkg. (16 oz.) powdered sugar (about 4 cups)

PREHEAT oven to 350°F. Grease 13x9-inch baking pan;
set aside. Beat cake mix, pumpkin, dressing and eggs
in large bowl with electric mixer on medium speed
until well blended. Pour into prepared pan.

BAKE 32 to 35 min. or until wooden toothpick inserted
in center comes out clean. Cool completely in pan on
wire rack.

BEAT cream cheese, butter, milk and vanilla in large
bowl with electric mixer on medium speed until well
blended. Gradually add sugar, beating after each
addition until well blended. Spread over cooled cake.
Cut into pieces to serve. Store any leftovers in
refrigerator.

From Kraft