Tunnel of Fudge Cake | Oregonian Recipes

Ingredients

• 1 3/4 cups butter, at room temperature (3 1/2 sticks)
• 1 3/4 cups granulated sugar
• 6 eggs
• 2 cups powdered sugar
• 2 1/4 cups all-purpose flour
• 3/4 cup unsweetened cocoa
• 2 cups chopped walnuts (8 ounces)
• 3/4 cup powdered sugar
• 1/4 cup unsweetened cocoa
• 1 1/2 to 3 tablespoons milk