First of all, boil your potatoes until al dente. Remove from the heat and drain.
Meanwhile, preheat your oven to 220 degrees Celsius and add your olive oil to frying pan.
Heat over a medium heat and add your onions and peppers. Sauté for a few minutes until the onions start to sweat.
Now add your aubergine and stir them round then coat them in the oil and season with salt and ground black pepper.
After a couple of minutes, as your aubergines start to colour, add your mushrooms and stir them into the vegetable mixture.
Let them cook through for a couple of minutes before adding your chopped tomatoes. Keep the halved tomatoes to one side for now.
Meanwhile, dissolve your tomato paste or pepper paste in a half mug of hot water (around 150 millilitres)
Add your herbs and spices to your vegetables and stir to mix.
Now take your güveç pots and divide the vegetable mixture between the two.
Arrange the potaotes in the pot and add your halved tomaotes to the top.
Pour the watered down tomato paste over the top of each casserole and drizzle generously with olive oil.
Place in the centre of your hot oven for 20 minutes.
If you are using a grated cheese topping, sprinkle this over the top a couple of minutes before the end of cooking.
Remove your vegetable güveç from the oven and garnish with freshly chopped parsley and some hot red pepper flakes if you want some extra spice.
Serve in the güveç pot on a heat proof mat.