Frozen Banana Yogurt with Peanut Butter and Chocolate-Hazelnut Swirl

Put the banana pieces in the freezer until frozen.

Put the frozen bananas in a blender and puree. Add the yogurt and peanut butter, then puree until smooth. Transfer the contents to a bowl and fold in the chocolate-hazelnut spread until halfway incorporated. Return the contents to the freezer and freeze until ready to scoop. Serve cold.