Ingredients Cake Batter 3 tablespoons all-purpose flour 3/4 teaspoon baking soda 1/2 teaspoon baking powder 1/4 teaspoon salt 2 tablespoons butter, softened 3/4 cup granulated sugar 1 egg 1 egg yolk 1 teaspoon maple flavoring 1 teaspoon Pure Vanilla Extract, 4 Oz. 3/4 cup sour cream Streusel 1/2 cup firmly packed brown sugar 1-1/2 teaspoon ground cinnamon Icing 1/2 cup confectioners' sugar 1 tablespoon milk Non-stick vegetable pan spray Tools Recipe Right Non-Stick Square Cake Pan, 8-Inch Scoop-it Measuring Cups Scoop-it Measuring Spoons small bowl large bowl Toothpick Instructions Click to mark complete - Ingredients:1-1/2 cups all-purpose flour3/4 teaspoon baking soda1/2 teaspoon baking powder1/4 teaspoon salt6 tablespoons (3/4 stick) butter, softened3/4 cup granulated sugar1 egg1 egg yolk1 teaspoon maple or vanilla extract3/4 cup sour creamStruesel 1/2 cup firmly-packed brown sugar1-1/2 teaspoons ground cinnamon3 tablespoons all-purpose flour2 tablespoons butter, softenedIcing1/2 cup confectioners' sugar1 tablespoon milk - Preheat oven to 350°F. Spray 8 in. baking pan with vegetable pan spray. - In small bowl, combine flour, baking soda, baking powder and salt; set aside. In large bowl, beat butter and granulated sugar with electric mixer until light and fluffy. Add egg, egg yolk and extract. Beat well. Add flour mixture in two additions alternately with sour cream, mixing only until incorporated. - For streusel, combine brown sugar, cinnamon, flour and softened butter in small bowl; mix until crumbly. Spread half of the batter over bottom of prepared pan. Sprinkle with half of the streusel mixture. Repeat. - Bake 30-32 minutes or until cake tester inserted in center comes out clean. Cool completely. In small bowl, combine confectioners' sugar and milk; drizzle over top of coffeecake.Makes about 9 servings.