1 2/3 cups plain flour
1 cup sugar
1/4 tsp baking soda
1 tsp baking powder
3/4 cup salted butter, room temperature
1/2 cup Nutella
3 egg whites
1 tsp vanilla extract or 1 tbs of vanilla essence
1/2 cup sour cream
1/2 cup milk
1 cup unsalted butter (icing)
1 tbs of cream (icing)
4 cups icing sugar (icing)
1/2 cup Nutella or more to taste (icing)
1. Whisk together flour, sugar, baking soda and baking powder in a large mixing bowl. Add butter, Nutella, egg whites, vanilla, sour cream and milk and mix on medium speed until smooth.
2. Fill cupcake liners a little more than half way. Bake 50 mins to an hour pending on your slow cooker with a tea towel under the lid. While cupcakes cool, make icing. Mix butter together for 1 minute on medium. Add 2 cups of Icing sugar and mix until smooth.
3. Add Nutella and 1 tbsp water and 1tbs cream, mix until smooth. Add icing sugar and 1 tbsp water and mix until smooth. Ice cupcakes.