1 pkg traditional family size brownie mix
1 brick (8-oz) cream cheese, softened
1/3 cup sugar
1/2 tsp vanilla
Preheat oven to 350 degrees.
Spray a 9 x 13-inch baking pan with nonstick cooking spray; set aside.
Make the brownie mix as directed on the package and pour into the prepared baking pan.
Beat the cream cheese, using an electric mixer at medium speed, until smooth. Add the sugar, continuing to mix until blended. Add the egg and vanilla; mix just until blended. Pour this mixture over the brownie mixture in the pan. Using a butter knife, cut through the mixtures to make a marbled effect.
Bake for 35 to 40 minutes or until the cream cheese parts are lightly browned. Allow to cool before cutting into 24 brownies.