HEAT oven to 350ºF.
LINE 8-inch square pan with foil. Mix first 3 ingredients in medium bowl. Cut in margarine with pastry blender or 2 knives until mixture resembles coarse crumbs; press onto bottom of prepared pan. Bake 15 min.
BEAT Neufchatel and granulated sugar with mixer until well blended. Add eggs and 2 Tbsp. flour; mix well. Blend in 1 Tbsp. zest, juice and baking powder; pour over crust.
BAKE 25 to 28 min. or until center is set. Cool completely. Refrigerate 2 hours. Sprinkle with powdered sugar and remaining zest before serving.
KRAFT Kitchen Tips:
Substitute 1 Tbsp. each lemon, lime and orange zest for the 3 Tbsp. lemon zest.
NOTE FROM THE KRAFT KITCHENS
For a softer crust, reduce the crust baking time from 15 min. to 5 min.
You should get about 1 Tbsp. zest and 2 Tbsp. juice from 1 lemon.