Ingredients
3/4 cup butter, softened
3/4 cup powdered sugar
1 egg, separated
1 teaspoon vanilla
11/2 cups flour
1/4 teaspoon salt
3/4 cup graham cracker crumbs
Nutella
Miniature marshmallows
2 Tablespoons butter, softened
3/4 cup powdered sugar
3 Tablespoons cocoa
1/2 teaspoon vanilla
2 Tablespoons water
Preparation