1. Heat oven to 375°F. Place 1 sheet phyllo dough on clean work surface. Spray with nonstick cooking spray for 1 second. Place second sheet directly on first sheet of phyllo and repeat spray. Repeat this step with third phyllo sheet.
2. With sharp knife, slice dough in half horizontally. Cut phyllo vertically into 3 equal sections so that you now have 6 even squares. Set aside 2 squares for another use.
3. Place 2 banana slices in the center of each phyllo square. Top each with 3 raspberries and 1 teaspoon chocolate chips. Bring all corners of square phyllo piece together, wrapping the ingredients inside and twisting the corners together to adhere. Place "purses" on ungreased baking sheet.
4. Bake 10 to 15 minutes or until phyllo is golden brown. Serve warm. 4 "purses".