Preheat oven to 350°.
Prepare Truffle Fudge Brownie Mix according to package directions and spread into a greased 9-inch springform pan. Bake for 27-30 minutes. Cool completely.
Once cooled, remove from springform pan and place on plate/platter to decorate.
In a large bowl with a mixer on medium speed, cream together cream cheese and 4 Tbsp. butter until smooth. Reduce speed and gradually add powdered sugar; increase speed and mix until smooth. Reduce speed and add in champagne and mix until just combined.
Spread frosting over cooled brownie pizza. Warm Creamy Caramel Sauce in microwave for 15 seconds and then drizzle over pizza. Decorate with gold and brown sprinkles. Chill for 30 minutes or until ready to serve. Slice into triangular pieces and serve.