Creamy and smooth with a sweet peanut butter taste, this fudge is made with powdered sugar and butter for a deliciously soft and crumbly treat. Peanut Butter Fudge is a decadent dessert that is extremely easy to make. No candy thermometers and only five ingredients.
Butter an 8 x 8-inch baking dish or cover with parchment paper, making sure to leave plenty of parchment hanging over the sides.
In a large pot over medium heat, melt 1 ¼ cups unsalted butter and 1 ¼ cups creamy peanut butter, stirring occasionally. Bring to a boil and remove from heat.
Stir in ⅛ teaspoon salt and 2 teaspoons vanilla extract until smooth. Add 4 cups powdered sugar and mix until well combined and smooth with no lumps remaining.
Pour the fudge mixture into the prepared baking dish and use the back of a spoon to smooth it into an even layer. Place plastic wrap over the dish and gently press down on the top of the fudge to cover. Refrigerate for 1 hour before slicing.