Nutella Cake

Recipe from Tahiya and http://carmencooks.wordpress.com/2009/04/14/nutella-self-frosting-cake:

Nutella Frosted Cupcakes
1 1/2 sticks (3/4 cup, 12 oz)butter, softened
3/4 cup granulated sugar... See More
3 large eggs
1/2 tsp vanilla extract
1 3/4 cups sifted all purpose flour
1/4 tsp salt
2 tsp baking powder
Nutella, approx. 1/3 cup
Preheat oven to 325F. Line 12 muffin tins with paper liners or grease the cups with some butter. Alternatively, butter an 8-inch round cake pan.
Cream together butter and sugar until light, 2 minutes. Add in eggs one at a time, until fully incorporated. Don’t worry if the batter doesn’t look smooth. Add vanilla. Stir in flour, salt and baking powder until batter is uniform and no flour remains.
Fill each muffin cup about 3/4 full (or pour all the batter into the cake pan). The batter will be thick. Top each cake with a dollop (I used about 2 tsp per cupcake and about 1/3 cup dolloped in tablespoon measures for the cake round) of Nutella. Swirl Nutella in with a toothpick, making sure to fold a bit of batter up over the nutella.
Bake cupcakesfor about 20 minutes and the round cake for 25-30.
Remove to a wire rack to cool completely.
Makes 12 cupcakes or 1 8-inch round cake.

My sis-in-law made this before and put a lot more butter by mistake- and it was much better with the extra butter