Heat the oven to 375 degrees. Coat a 9-inch spring-form pan with cooking spray. Whisk 1 cup flour, baking powder, baking soda and nutmeg in a medium bowl. Beat 2/3 cup sugar, sour cream, ¼ cup melted butter, egg and almond extract in a medium bowl at medium-low speed until smooth and fluffy.
At low speed, beat in the flour mixture. Spread in the bottom of the spring-form pan. Top with the peaches and blueberries.
Combine ½ cup flour, ¼ cup sugar, and 3 tablespoons softened butter in a small bowl until the mixture is crumbly; sprinkle over fruit. Bake for 55 to 60 minutes or until golden brown and a toothpick inserted in the center comes out clean.
Cool on a wire rack for 10 minutes; remove the sides of the spring-form pan. Cool completely before serving.