For tomato sauce, heat oil in a saucepan over medium-high heat, add onion, garlic and chilli and sauté until tender (7-8 minutes). Add spices, sauté until fragrant (1-2 minutes), add tomato and simmer until thick (10-15 minutes). Add sugar, season to taste and keep warm.
Blanch beans until just tender (2-3 minutes), drain, add to tomato sauce, stir to coat. Just before serving, add ricotta and oregano, stir to coat, season to taste and serve hot.
This recipe is from the December 2010 issue of Australian Gourmet Traveller.