Step 1

Line an 8x8 pan with parchment paper or wax paper. The edges will overlap a little. Don't use baking or cooking spray; it doesn't work. Reserve.

Step 2

Place the peanut butter chips in a medium, microwave-safe mixing bowl and microwave on high for about 2 minutes, pausing every 15 seconds to stir the chips so they don’t burn. After a minute or a minute and a half, maybe do 10-second spurts to avoid scorching. Stir very well between them; sometimes the chips are melted but don't look like they are.

Step 3

You need to warm the white frosting to make it pourable. Remove the lid and every tiny piece of foil from the can. Make sure no metal remains. If unsure, transfer to a microwave-safe bowl. Microwave for 1 minute.

Step 4

Pour the melted frosting over the melted peanut butter chips.

Step 5

Stir well until both ingredients are well combined and the color is even.

Step 6

Pour the fudge mixture into the prepared pan and spread evenly, tapping the pan on the counter to flatten rising bubbles.

Step 7

Chill for 4 hours or until set.

Step 8

Cut into 1-inch pieces with a kitchen knife and serve.