Heat oven to 375°F. Line cookie sheet with cooking parchment paper or foil.
Separate dough into 8 rounds. Place on cookie sheet.
Bake 12 to 17 minutes or until golden brown. Cool.
Split each crescent round. Spread cut side of bottom of each with about 1 tablespoon hazelnut spread. Add 3 or 4 banana slices. Top with second half of crescent round, making a sandwich. Serve immediately.