Sour Cream Coffee Cake with Chocolate and Walnuts#ratingval# from #reviews# reviewsPrintRecipe Type: CakesAuthor: Epicurus.com KitchensServes: 12Ingredients1 Cup (2 sticks) unsalted butter; softened3/4 Cup sugar2 Cups sifted all-purpose flour1/4 teaspoon salt1 teaspoon baking soda2 teaspoons baking powder3 large eggs1 Cup sour cream2 teaspoons vanilla extract1 Cup coarsely chopped walnuts4 ounces bittersweet chocolate; coarsely choppedInstructionsPreheat oven to