1/2 cup unsalted butter, softened 
1 cup superfine sugar 
2 large eggs, room temperature 
1/2 teaspoon almond extract 
1-1/2 cups all-purpose flour 
1/2 cup almond flour 
1/2 teaspoon baking powder 
1/2 teaspoon baking soda 
1/2 teaspoon kosher salt 
1 cup sour cream 
3/4 cup pineapple preserves 
3/4 cup apricot preserves 
1/2 cup sliced almonds 
Confectioners' sugar, optional
1. Preheat oven to 350°. In a large bowl, beat butter and sugar until crumbly, about 2 minutes. Add eggs, 1 at a time, beating well after each addition. Beat in extract. In another bowl, whisk flour, almond flour, baking powder, baking soda and salt; add to creamed mixture alternately with sour cream, beating well after each addition. 
2. Transfer half the batter to a greased 10-in. springform pan. Mix pineapple and apricot preserves; drop by tablespoonfuls over batter. Carefully top with remaining batter. Sprinkle with almonds. Bake until a toothpick inserted in center comes out clean, 60 to 65 minutes. Cool on a wire rack 10 minutes. Loosen side from pan with a knife. Cool completely. Remove rim from pan. Sprinkle with confectioners' sugar if desired.
Prize Winning Recipe
TOTAL TIME: Prep: 30 min. Cook: 1 hour + cooling 
YIELD: 12 servings. 
Nutrition Facts
1 piece: 389 calories, 17g fat (8g saturated fat), 56mg cholesterol, 182mg sodium, 57g carbohydrate (39g sugars, 1g fiber), 5g protein.