Prawn and mushrooms risotto

Ingredients 
40g butter, 
2, shallot finely chopped 
340g  rice cooked 
1.2 L chicken stock
2  large tomatoes peeled & chopped 
8 button, mushrooms sliced
300g prawns  shelled
salt & pepper.




Method 
Heat the butter in a pan until melted. brown the shallots & add the tomatoes, add the rice stirring for about 3 minutes, add some stock & stir until the rice has soaked up most of the liquid continue until all the stock is used up,add the mushrooms & prawn cover & simmer until the rice is cooked, serve with freshly grated Parmesan cheese if you like.