Walnut Brownie Loaf W/Cocoa Fudge Frosting Recipe

Ingredients

• 3/4 cup butter
• 3/4 cup sugar
• 3/4 cup brown sugar (packed)
• 1 teaspoon vanilla
• 2 eggs
• 1 3/4 cups flour (unsifted)
• 1/2 cup unsweetened baking cocoa
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1 (8 ounce) container plain yogurt (at room temperature)
• 1 cup walnuts (toasted and coarsely chopped)
• 1/4 cup butter
• 1/4 cup unsweetened baking cocoa
• 1 1/2 cups powdered sugar
• 3 tablespoons milk
• 1/2 teaspoon vanilla
• 1/4-1/2 cup walnuts (toasted and coarsely chopped, for garnish)