Heat oven to 400°F.
Unroll dough onto ungreased large cookie sheet. Starting at center, press out dough into 15x10-inch rectangle; cut into 6 (5-inch) squares. Spread each square with 2 tablespoons peanut butter to within 1/2 inch of edge; top each with 4 banana slices.
Pull 4 corners of dough to center of mixture; twist firmly and pinch edges to seal.
Bake 9 to 12 minutes or until golden brown. Immediately remove from cookie sheet. Serve warm.