In a large bowl, mix together the peanut butter and butter until smooth.

Add the powdered sugar and mix until combined.

Add in the crushed Rice Krispies cereal and stir well to combine.

Roll the peanut butter mixture into 1 inch balls and lay them on a cookie sheet covered with either waxed or parchment paper.

Melt the chocolate according to the directions on the back of the package.

Dip each ball into the melted chocolate to coat.

Pick them up with a fork to let the excess chocolate drip off.

Place back onto the waxed paper and immediately add the sprinkles.

Let the finished peanut butter chill in the refrigerator for about an hour to let the chocolate set.