Chocolate Walnut Cake with Dulce de Leche Frosting – Fisher Nuts

Ingredients

• 1-3/4 cups flour
• 1-3/4 cups granulated sugar
• 3/4 cup unsweetened cocoa powder
• 1 tablespoon instant espresso
• 2 teaspoons baking soda
• 1 teaspoon baking powder
• 1 teaspoon kosher salt
• 2 eggs, room temperature
• 3/4 cup buttermilk, room temperature
• 1/2 cup sour cream, room temperature
• 1/4 cup vegetable oil
• 1/4 cup (1/2 stick) unsalted butter, melted
• 2 teaspoons vanilla
• 1/2 cup hot water
• 3 cups Fisher® Walnut Halves and Pieces, coarsely chopped, divided
• 1 cup (2 sticks) unsalted butter, room temperature
• 2-2/3 cups powdered sugar
• 2/3 cup prepared dulce de leche
• 1/2 teaspoon vanilla
• 1/4 teaspoon kosher salt