Chocolate Orange Marble Cake - cooking recipe

Ingredients

1/2 cup butter
2 tsp vanilla extract
1/4 cup granulated sugar
2 None large eggs
2 1/4 cups self-rising flour, sifted
3/4 cup milk
2 oz dark chocolate, melted, cooled
1 tbsp orange zest
None None Chocolate Fudge Frosting
8 tbsp butter
2/3 cup powdered sugar, sifted
4 oz dark chocolate, melted, cooled
1/4 cup milk
1 tsp vanilla extract

Preparation

Preheat oven to 350\u00b0F. Grease 2 (7 inch) deep square cake pans and line with parchment paper. Grease paper.
In a stand mixer, cream butter, vanilla and sugar until light and fluffy. Add eggs, 1 at a time, beating well after each addition. Fold in flour and milk. Distribute between 2 bowls. Stir melted chocolate into 1 bowl and the orange zest into the other. Drop spoonfuls of chocolate mixture into corners and center of each cake pan. Spoon orange mixture into spaces. Swirl batters together with a knife. Bake for 35 mins. Let cool in pans for 5 mins then transfer to a wire rack to cool completely.
To make the chocolate fudge frosting, beat butter until light and fluffy. Gradually beat in 1/2 the powdered sugar. Beat in chocolate, milk and vanilla then remaining powdered sugar. Continue beating until spreadable.
Use 1/4 of the frosting to join cakes. Spread top and sides with remaining frosting.