Yield: about 16 brownies
1 (18 oz) package brownie mix
4 oz cream cheese, at room temperature
2 TBS granulated sugar
1 egg yolk
2 TBS OMG! Raspberry Barrel Aged Balsamic Vinegar, divided
Preheat oven to 350°F. Grease a 13x9x2-inch baking dish.
In a small mixing bowl, vigorously stir together the cream cheese and sugar until smooth. Stir in egg yolk and 1 tablespoon raspberry balsamic vinegar; set aside.
Prepare brownie mix according to package directions, replacing the water with milk and the oil with melted butter if desired. Stir in the remaining 1 tablespoon raspberry balsamic vinegar. Pour the batter into the prepared baking dish and spread evenly. Spoon the cream cheese mixture into small mounds on top of the brownie batter. Using a butter knife, gently swirl the cream cheese into the brownie batter.
Bake 25 to 30 minutes or until the center is set. Cool completely. Cover and keep refrigerated until ready to use.