Cut up your ripe bananas and store them in a plastic Ziploc or tupperware. Once they are very frozen (about 6 hours), throw them with your powdered PB into your food processor. Start your processor, at first it will just look like a bunch of mushed up little crumbs. Do not get discouraged. Keep on processing away. After about 5 or 6 minutes, you will get a nice smooth paste. Scoop and Enjoy