A peanut butter fudge recipe on Jif.com uses sugar, butter, evaporated milk, peanut butter, vanilla extract and marshmallow creme. A recipe on FoodNetwork.com uses butter, peanut butter, vanilla extract and powdered sugar.
To make the Jif.com recipe, use aluminum foil to line a 9-by-13-inch pan and spray it with nonstick cooking spray. Combine 3 cups of sugar, 1/2 cup of butter and 1/2 cup of evaporated milk in a large saucepan over medium heat. Stir the mixture constantly until it comes to a boil, reduce the heat, and simmer for five minutes, continuing to stir it constantly. Add 1 2/3 cups of creamy peanut butter, stir well, then add 7 ounces of marshmallow creme and 1 teaspoon vanilla, and beat until the mixture is well-blended. Pour the mixture into the pan and spread it evenly. Allow the fudge to cool before cutting.
To prepare the FoodNetwork.com recipe, line an 8-by-8-inch pan with parchment paper. Combine 8 ounces of unsalted butter and 1 cup of peanut butter in a bowl, cover the bowl with plastic wrap, and microwave on high for two minutes. Stir the mixture, and microwave for an additional two minutes. Add 1 pound of powdered sugar and 1 teaspoon of vanilla, and stir well with a wooden spoon. Pour the mixture into the pan, and cover the top of the fudge with the excess paper. Refrigerate for about two hours.