Preheat oven to 350 degrees F. Grease 13x9-inch baking pan.
Combine flour, baking powder and salt in small bowl. Beat brown sugar and butter in large bowl until creamy. Beat in eggs and vanilla extract. Gradually beat in flour mixture. Stir in DelightFulls morsels. Spread into prepared pan.
Bake for 25 minutes or until top is golden brown. Cool completely in pan on wire rack. Cut into bars. Store in an airtight container.