Preheat oven to 350 degrees. Grease bottom of 13x9x2 inch pan.
For brownies- Combine brownie mix, fudge packet from mix, 2 eggs, water,and oil in large bowl. Stir with spoon until well blended, about 50 strokes. Stir in pecans. Spread evenly in pan.
For Topping- beat cream cheese in large bowl at medium speed with electric mixer until smooth. Beat in 2 eggs, confectioners sugar and vanilla extract until smooth. Spread evenly over brownie mixture. Bake at 350 45 to 50 minutes or until edges and top are golden brown and shiny. Cool completely. Refrigerate until well chilled. Cut into bars. 48 bars