BIRYANI - INDIAN LENTIL RICE

2 cups cooked brown lentils, 3 cups cooked brown rice, 2 medium onions chopped, 2 cloves garlic minced, 1T olive oil, 3 large potatoes peeled and cubed, 2t curry powder, 1t turmeric, salt and pepper to taste, 300ml hot water, 1 cup mushrooms quartered, 1 cup chickpeas cooked, 1 cup peas. -Saute the onions, mushrooms and garlic in a pan with the olive oil. -Stir the ingredients together gently, scoop into a deep oven dish (keep the chickpeas and peas aside, add to the dish 45 minutes into the baking time). -Cover and bake in the oven for 1 hour at 180dC.