Vegan Chocolate Hazelnut Pie aka Healthy No Bake Nutella Pie! A chocolate cookie crust topped off with a light, rich, smooth and airy chocolate-hazelnut center and a chocolate mousse top! Make the bottom two layers the night before to settle and firm up in the fridge before serving. Do not let the seemingly amount of ingredients turn you off this recipe. The majority of the ingredients are the same and are used more than once in the crust, center and top layer.