This is an Alton Brown recipe that I have co-opted as my own! I usually only list my own or family recipes here on the blog but this fudge is so easy, quick and delicious that I had share it!
Tips: When adding the powdered sugar I sift in about a half a cup at a time. It just makes it a little easier to stir and incorporate it all.
If you want some chocolate and peanut butter you can add about half a cup of chocolate chips or M&M's to the recipe or melt some chocolate chips and marble it into the warm fudge using a knife (don't stir in the melted chocolate, just swirl it). I've even swirled/marbled in some caramel topping and then pressed some crushed pretzels into the top of the fudge while it was still warm and it was fantastic!
Alton Brown's Peanut Butter Fudge
1 cup butter
1 cup creamy peanut butter
1 teaspoon vanilla
1 pound powdered sugar
Microwave butter and peanut butter for 2 minutes on high. Stir and microwave on high for 2 more minutes. Add vanilla and powdered sugar to peanut butter mixture and stir to combine with a wooden spoon. Pour into a buttered 8 by 8-inch pan lined with waxed paper. Place a second piece of waxed paper on the surface of the fudge and refrigerate until cool. Cut into 1-inch pieces and store in an airtight container for up to a week