Preheat oven to 350 degrees. Combine No Pudge! mix and 2/3 cup of the yogurt according to package directions. Pour into nonstick pan. Blend remaining yogurt, cream cheese and vanilla extract in small bowl. Drop teaspoonfuls of this mixture onto brownie dough. Use knife to marble mixture through brownies. Bake for 35 to 40 minutes. For easy cutting, let brownies cool, then refrigerate until chilled. When wrapped in plastic, brownies stay fresh for two weeks.
