Grease bottom and sides of a 9 inch round baking pan with t teaspoon butter.
Sprinkle with confectioners’ sugar; set aside.
Place almond and sugar in a blender or food processor; cover and process until finely ground.In a small mixing bowl, cream remaining butter; beat in almond mixture until combined.
Add eggs, one at time, beating well after each addition. Stir in sour cream and lemon peel.
Combine flour and baking powder; add to creamed mixture alternately with lemon juice.
Pour into prepared pan.
Bake at 350 degrees for 40-45 minutes or until toothpick inserted near center comes out clean. Cool on a wire rack for 10 minutes. Invert onto a wire rack to cool.For topping, in a heavy saucepan, combine the berries, sugar and lemon juice. Cook and stir over medium low heat for 10 minutes or until mixture begins to thicken.