Chocolate Kiev Cake with Walnuts

Ingredients:

For the Meringue Layers:

4 large egg whites
1 cup granulated sugar
1/2 cup chopped walnuts
For the Cake Layers:

1 cup all-purpose flour
1/2 cup cocoa powder
1 teaspoon baking powder
1/2 teaspoon baking soda
1/4 teaspoon salt
1/2 cup unsalted butter, softened
1 cup granulated sugar
2 large eggs
1 teaspoon vanilla extract
1/2 cup buttermilk
For the Dulce de Leche Filling:

1 can (14 oz) dulce de leche
For the Chocolate Frosting:

1 cup unsalted butter, softened
1/2 cup cocoa powder
4 cups powdered sugar
1/4 cup heavy cream
1 teaspoon vanilla extract
Directions:
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