CHOP enough strawberries to measure 2 cups. Refrigerate remaining whole berries for later use.
BEAT Neufchatel, sugar, zest and juice in large bowl with mixer until well blended. Add COOL WHIP; beat on low speed just until blended. Gently stir in chopped berries. Spread about 2/3 of the COOL WHP mixture onto bottom half of cake. Cover with top of cake and remaining COOL WHIP mixture.
REFRIGERATE 1 hour. Arrange remaining berries on top of cake before serving.