Microwave Peanut Butter Fudge

Why I Love This Recipe
This is about as simple as it gets when it comes to fudge. 4 ingredients but very, very tasty! Lots of peanute butter flavor.
Ingredients You'll Need
1 cup butter, plus more for greasing pan
1 cup peanut butter
1 teaspoon vanilla
1 pound powdered sugar
Directions
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.