Such a simple but tasty treat. Very kid-friendly but aldults love them too. You can certainly use creamy peanut butter or crunchy but I have always used the extra crunchy, even though it's hard to find sometimes.
Mix sugar and syrup. Add peanut butter then Rice Krispies. Press onto (lightly sprayed) foil-lined cookie sheet or into a 2 1/2 quart glass dish. Melt almond bark and spread on top. Cool completely then cut into bars.
Hint: With great results I have added crushed peanuts to creamy peanut butter plus I have substituted dark corn syrup for the white syrup as well.