This is actually one of my favorite recipes, because anything with nutella...I'm sold. The sour cream adds a tang to it to keep the sweetness in check, without that its kind of an overkill. They're also a lot more dense than cupcakes would be, and lemme tell you I would pick a muffin instead of a dainty cupcake any day.
So if you've got some left overs of nutella (doubtful, i eat it in spoonfuls each night), bake up a batch of these babies.
NUTELLA SWIRL MUFFINS
1 1/4 c flour
1/2 tsp baking powder
1/4 tsp baking soda
1/4 tsp salt
2 eggs (room temperature)
3/4 c sugar
1/2 c butter (softened)
1 tsp vanilla
1/2 c sour cream (room temperature)
.....................................................................................
Oven at 350.
Sift all dry ingredients together. In a separate bowl whisk together eggs and sugar, add rest of wet ingredients- sour cream last. Combine both mixtures together. Place in prepped muffin tins/cups. Dollop 1-2 tsp nutella in each muffin cup and with a toothpick, knife or fork make swirls.
Bake for 23-30 minutes.