Unscrew the tops of both peanut butter and frosting jars.
Remove the seals entirely off of the jars making sure no seal bits remain.
Place both of the jars into the microwave.
Cook for 3-4 minutes or until almost liquid.
While the jars are melting in the microwave, place a piece of wax paper into the 9 X 9-inch square baking dish.
Use two clips to stabilize the wax paper so it stays in place.
Pour the frosting into the mixing bowl and use a spatula to scrape the sides of the jars so every drop is used and gets out of the jars.
Pour the peanut butter into the mixing bowl when it is liquid and no longer solid.
To test the consistency of the peanut butter, tip it slowly over the bowl to make sure it can freely pour.
Using the spatula, mix the frosting with the peanut butter until completely combined.
Pour the fudge into the prepared 9 X 9-inch baking dish and then use an offset spatula to smooth out the mixture.
Use wax paper to gently press the fudge down into the pan.
Let it rest in the pan to cool, then cut and serve!
Notes
For this recipe, you can choose from a variety of different frostings.Flavors include Vanilla, Chocolate, Cream Cheese, Fudge, Butter Cream, French Vanilla, Creamy Buttercream, Coconut Pecan, and Salted Caramel.Additionally, instead of peanut butter, you can use Nutella with Frosting for a super-fudgy fudge.