- 1 pound Pippin apples (about 2 medium), peeled, cored, diced
- 1/4 cup water
- 2 1/2 cups plus 1 tablespoon all purpose flour
- 2 teaspoons baking soda
- 1 1/2 teaspoons ground cinnamon
- 1/2 teaspoon salt
- 1/4 teaspoon ground nutmeg
- 1/4 teaspoon ground cloves
- 1 cup dried currants
- 1 cup walnuts (about 4 ounces), toasted, chopped
- 2 cups sugar
- 1 cup (2 sticks) unsalted butter, room temperature
- 1 tablespoon brandy
- 1 1/2 teaspoons vanilla extract
- 4 large eggs
- 1 cup (2 sticks) unsalted butter, room temperature
- 1 cup (packed) dark brown sugar
- 2 8-ounce packages cream cheese, room temperature
- 1/2 cup pure maple syrup
- 1/4 teaspoon maple flavoring
- 2 cups walnuts, toasted, chopped
- Preheat oven to 350°F. Butter and flour three 9-inch-diameter cake pans with 1 1/2-inch-high sides. Combine apples and water in small saucepan. Cover; simmer over medium-low heat until apples are tender, about 20 minutes. Place in processor; purée until smooth. Cool purée. Sift 2 1/2 cups flour and next 5 ingredients into medium bowl. Toss currants with remaining 1 tablespoon flour in small bowl to coat; mix in walnuts.
- Using electric mixer, beat sugar, butter, brandy and vanilla in large bowl until blended. Beat in eggs 1 at a time. Beat in half of flour mixture and 1 1/4 cups apple purée, then remaining flour mixture (re-serve any remaining puree for another use). Stir in currants and walnuts. Divide batter among prepared pans.
- Bake cakes until tester inserted into center comes out clean, about 20 minutes. Cut around pan sides to loosen cakes; turn out onto racks and cool.
- Using electric mixer, beat butter and sugar in large bowl until blended. Beat in cream cheese, then maple syrup and flavoring. Chill until beginning to firm, about 20 minutes.
- Place 1 cake layer on platter. Spread with 3/4 cup frosting. Top with second layer; spread with 3/4 cup frosting. Top with third layer. Spread 1 cup frosting in thin layer over cake. Chill 15 minutes. Spread remaining frosting over cake. Press 2 cups walnuts halfway up sides of cake. Chill until frosting is set, at least 30 minutes. (Can be made 1 day ahead. Cover; keep chilled. Let stand at room temperature 1 hour before serving.)