Preheat oven to 350º. Grease well a 12-inch springform pan.
In a large bowl, mix together ricotta and orange zest.
Lightly beat eggs and add them and granulated sugar to ricotta; mix well. Pour mixture into prepared pan and top with raspberries. Set aside.
Topping:
3/4 cup unsalted butter
1/2 cup confectioners’ sugar
1 egg
1 1/2 cups all-purpose flour
1/2 cup toasted almonds
1/2 teaspoon salt
In a medium bowl, mix well butter and confectioners” sugar. Add egg and mix again. Add flours, almonds and almond extract and salt; mix well. Crumble this topping over raspberries and bake for 35 to 40 minute or until a tester inserted in center of cheese custard comes out clean. Allow to cool completely before serving. Serve chilled.