Mix, knead & shape into 4 balls. Bake for 25 mins at 200C.
Heat 1 tbsp oil in a deep saucepan and add the onion, carrots and celery. Soften for 2-3 minutes.
Add the mushrooms, season with salt and pepper and cook for 2 minutes.
Add the meat free stock, chopped tomatoes, lentils and Bisto. Stir in the bay leaves, thyme, balsamic vinegar and new potatoes (if using). Cook on a medium simmer for 30 - 40 minutes.
Stir in the marmite and your stew is ready to serve.
