Marble Loaf Cake with Nutella

Ingredients:

• 250 g flour (2 cups)
• 150-200 g butter (14 Tbsp)
• 200 g sugar (1 cup minus 1 1/2 TBSP)
• 4 eggs, whites separated from the yolks
• 1 teaspoon vanilla essence
• 3 teaspoons baking powder
• 1/8 teaspoon salt
• 2 tablespoons cocoa powder / or Nutella

Directions:

1. Whisk the egg whites with a little salt until firm, and set aside.
2. Beat the yolks with sugar, add butter, vanilla and mix well.
3. In a separate bowl, mix the flour with baking powder.
4. Add flour and egg whites to to the batter (alternating – a couple of spoons of flour, then a couple of spoons of egg whites). Mix everything well, and then divide the batter in two. Leave one half yellow, and add cocoa powder or Nutella to the other half.
5. In a bread pan, (greased and floured) alternate yellow and brown mixture. Bake for 40-50 mins at 180°C (350 F), or until a toothpick comes out clean..