This fudge is no fuss to make at all! No need for candy thermometers or special ingredients. Make several batches for easy and inexpensive gift giving!
In large microwave-safe bowl, place butter and peanut butter. Microwave on HIGH 1½ minutes or until mixture begins to bubble; stir. Microwave on HIGH 1½ additional minutes. Stir in vanilla (mixture will bubble up). Stir in sugar; stir until thick and well blended. Spoon mixture evenly into pan sprayed with vegetable pan spray or cookie cutter; smooth surface. If desired, sprinkle peanuts over top; gently press into surface of candy. Cover with plastic wrap; refrigerate until set.
Makes about 2 pounds candy.