Ingredients
1/2 cup unsalted butter, softened
3/4 cup sugar
2 eggs plus one egg yolk, room temperature
1/2 teaspoon vanilla extract
11/2 cups all purpose flour
1/4 teaspoon salt
11/2 teaspoons baking powder
4 ounces milk, room temperature
1/2 cup butter (1 stick)
2 cups powdered sugar
3 tablespoons Nutella
1 tablespoon milk
1/2 teaspoon vanilla extract
Preparation
