Preheat your steam oven to steam only, 212°F/100°C (100% humidity).
Tip any remaining oil out of the casserole dish and give it a quick wipe over with paper towel. Reduce the heat to medium low and add the olive oil.
2 Tbsp olive oil
Tip in the rice and stir to coat all the grains with oil, then add all the spices, sugar and salt and stir well to combine. Turn off the heat.
1 cup basmati rice, 2 tsp ground coriander, 1 1/2 tsp ground cumin, 1 1/2 tsp ground cinnamon, 1/2 tsp ground turmeric, 1/2 tsp ground black pepper, 1 tsp granulated sugar, 1 tsp table salt
Add the water and drained lentils to the rice, and stir just to mix everything together.
1 1/4 cups water, 14 oz canned brown lentils
Put the pan, uncovered, into your steam oven and cook for 18 minutes. Most of the liquid should be absorbed.
Remove the rice from the oven, cover and let it rest for 5-10 minutes, before fluffing with a fork.
Stir about 3/4 of the onions gently through the rice, then scatter the rest of the onions over the top of the dish. Serve warm with cucumber yoghurt spooned over the top of each portion.
Plain Greek or unsweetened yoghurt mixed with sliced cucumber, garlic, mint and lemon juice