Combine brownie mix, melted butter and 1 egg together.
Spray PERFECT BROWNIE pan & dividers thoroughly with nonstick cooking spray. Spread mixture in bottom of PERFECT BROWNIE pan.
Beat cream cheese until fluffy. Add sugar, eggs, and vanilla.
In separate bowl, mix 1/2 cup of cream cheese mixture with hot fudge. Pour remaining cream cheese mixture on top and gently swirl a knife through batters to create a marble effect.
Place divider into batter.
Bake at 350 for 30-35 min. Cool completely and refrigerate before serving.