Chocolate Walnut Cupcakes with Chocolate Cinnamon Frosting - Diamond Nuts

Ingredients

• 2 cups all-purpose flour
• 1 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 cup unsweetened cocoa powder
• 1 cup hot water
• 1/2 cup buttermilk
• 1 cup (2 sticks) unsalted butter, soften
• 2 cups sugar
• 1 teaspoon vanilla extract
• 1 cup Diamond of California® Chopped Walnuts
• 1 cup white chocolate
• 1/4 cup Diamond of California® Chopped Walnuts
• Diamond chocolate molds
• 4 cups powdered sugar
• 1 tbsp cinnamon
• 1/2 cup dark chocolate chips
• 1 tbsp buttermilk