Fold in egg whites and vanilla. Spread over baked crust and sprinkle flaked coconut over top. Bake at 325 degrees for 30 minutes. Cool and cut into bars. In oven, melt margarine in 13x9-inch pan.
Sprinkle vanilla wafer crumbs evenly over margarine.
Bake at 350 F for 18-20 minutes or until edges are light golden brown. Makes 36 bars. Combine in large bowl first 3 ingredients until well mixed. Press into prepared pan. Blend in large bowl frosting mix and cream cheese.