In a large bowl, mix together the oats, rice cereal, chocolate chips, coconut, sunflowers, peanuts, raisins, wheat germ, and sesame seeds.
In a large microwave-safe bowl, combine the marshmallows, peanut butter, butter, corn syrup and vanilla.
Microwave the marshmallow mixture at 70% power for 2-3 minutes, stirring often until well-blended.
Quicky stir the dry ingredients in to the marshmallow mixture. You'll have to work quickly as the mix will get gooey fast.
Spread into a greased 13-in. X 9-in. X 2-in. baking pan. To flatten the granola bars, I spray the BOTTOM of a second baking pan with cooking spray, nest this second pan on top of the pan with the mix and press down hard.