Step 1
Preheat oven to 170°C/150°C fan forced. Grease a 20cm springform pan and line the base with baking paper.
Step 2
Use electric beaters to beat the butter, sugar and lime rind until pale and creamy. Add the ricotta and beat until just combined. Add the eggs, 1 at a time, beating well after each addition.
Step 3
Use a large metal spoon to fold the flour into the mixture. Stir in the lime juice and fold in the mango. Transfer mixture to the prepared pan. Bake for 50 minutes or until the cake springs back when lightly touched (it will still be quite pale on top).
Step 4
Cool the cake in the pan for 10 minutes, then release from the pan. Cut the cake into wedges and serve warm, topped with whipped cream, extra mango and extra lime rind.