Step 1

In a medium saucepan, add the butter. Place on stove over medium heat and allow to melt completely.

Step 2

Then, add in the sugar, brown sugar, peanut butter, vanilla, and whole milk. Stir over medium heat until well combined.

Step 3

Pour into an 8 x 8-inch baking dish that has been sprayed with nonstick cooking spray. Spread evenly.

Step 4

Allow to cool completely by chilling in the fridge for at least 4 hours.

Step 5

Slice and enjoy.