Prepare an 8x8-inch pan by lining it with aluminum foil or parchment paper.

Place white bark in a microwave-safe bowl. Microwave in 30-second intervals, stirring often, until bark is completely melted.

Add sweetened condensed milk and stir until uniform.

Pour mixture into your prepared pan.

Add small spoonfuls of hot fudge topping on top of fudge.

Using a toothpick, swirl the fudge throughout the white fudge.

Place mini peanut butter cups evenly throughout the fudge.

Refrigerate fudge for 2 hours or until it is hardened.

Cut into pieces and serve.