Mix cake batter as directed on box.

<span class="mceItemHidden" data-mce-bogus="1"><span></span>Spoon about 1 teaspoon of Nutella in each cupcake mold</span>

Add prepared cake batter

Bake as directed

While cupcakes are baking, prepare frosting.

<span class="mceItemHidden" data-mce-bogus="1"><span></span>In a pastry bag, spread Nutella on one side</span>

<span class="mceItemHidden" data-mce-bogus="1"><span></span>Add buttercream</span>

When cupcakes are baked and cooled, frost with frosting.