Step 1

Heat the oil in a medium ovenproof frying pan and fry the onion over a medium heat for 8-10 minutes or until soft and lightly golden. Add the garlic and fry for 30 seconds, then stir in the tomatoes with a splash of water. Simmer for another 5-10 minutes or until the tomatoes start bursting and turn saucy. Heat the oven to 180C/fan 160C/gas 4.

Step 2

Stir the orzo, stock, 1 tbsp harissa, greens and half the dill into the tomatoes, and bring to a simmer. Transfer to the oven, uncovered, for 8-10 minutes or until the orzo is just tender and the liquid has been absorbed. Toss the prawns with the remaining ½ tbsp harissa and a squeeze of lemon. Scatter over the orzo, and bake for another 5-8 minutes or until pink and cooked through. Serve scattered with the remaining dill and lemon wedges to squeeze over.