Prepare Brownie Mix: In a large microwave-safe bowl, add the dry brownie mix. Microwave in 30-second increments, stirring after each, for a total of 2 minutes. Set aside to cool.

Mix Cream Cheese: In a separate large bowl, use an electric mixer to beat the softened cream cheese on medium speed until smooth and creamy.

Combine Ingredients: Add the prepared brownie mix and milk to the cream cheese. Beat until well combined and smooth.

Fold in Whipped Topping: Gently fold in the thawed whipped topping until completely blended into the mixture.

Add Chocolate Chips: Fold in the mini chocolate chips until evenly distributed throughout the dip.

Transfer and Serve: Transfer the dip to a serving bowl and sprinkle additional mini chocolate chips on top, if desired. Serve immediately with your favorite dippers such as pretzels, graham crackers, cookies, or fruit.