In shallow bowl, place yogurt. In another shallow bowl, place crushed granola bars. Peel banana; cut off small slice from each end, and cut remaining banana into 5 equal pieces. Place banana pieces in yogurt; stir with spoon until coated. Roll banana pieces in crushed granola bars to coat well. Place 1 coated banana piece in hole in each roll, making hole larger if necessary. Set remaining yogurt aside.