1Heat oven to 350°F (325°F for dark or nonstick pan). Grease bottom only of 12x3/4-inch pizza pan with shortening or cooking spray.
2Make brownie batter as directed on box. Spread in pan.
3Bake 25 to 28 minutes or until toothpick inserted 2 inches from side of pan comes out almost clean. Cool completely, about 1 hour.
4In small bowl, beat cream cheese, sugar and vanilla with electric mixer on medium speed until smooth. Carefully spread mixture evenly over brownie base. Arrange berries over cream cheese mixture. Stir jelly until smooth; brush over berries. Refrigerate about 1 hour or until chilled. Cut into wedges. Store covered in refrigerator.