Preheat the oven: preheat the oven to 180°C / 350-375°F / Gas Mark 4-5. Note 4
Season: remove the packaging from the ribs and use paper towel to pat them dry. Then place them in one flat payer on a chopping board. Season with salt and black pepper then flip to the other side and repeat.
Brown: place a large saute pan on the stove and turn the heat to high. Pour in the olive oil, give the pan a swish and then use tongs to place the ribs into the pan. Allow them to cook for 3 minutes then flip to the other side and cook for a further 3 minutes. Once done transfer to a paper towel lined chopping board.
Vegetables: without rinsing or cleaning the pan add the sliced leeks, fennel and mushrooms. Cook these for 2 - 3 minutes, using a wooden spoon to move them around in the pan as they soften.
Garlic and herbs: once the vegetables are cooked, add the garlic, tomato paste, dried oregano and dried thyme. Stir these to combine then cook for 1 to 2 minutes.
Ribs and sauce: Pour in the Worcestershire sauce, followed by the vegetable stock and then the red wine. Next use kitchen tongs to place the short ribs back into the pan, bone side up with meat side nestled into the vegetable mixture. Place the 2 dried bay leaves in the centre of the pan, put the lid on and place the ribs onto the middle shelf of the preheated oven.
Additional liquids: after 1 hour of cooking, use oven mits to remove the pan from the oven and place it on a heatproof surface. Use an oven mit to remove the lid, then pour in another 1 cup of vegetable broth, followed by 1 cup of red wine. Put the lid back on and place the ribs back into the oven. After a further hour, remove the ribs and repeat the top up of vegetable stock and red wine. Place the lid back on and place the ribs back into the oven for a final hour.
Serve: portion mashed potato (optional) into bowls, then top it with a cooked rib as well as several spoonfuls of sauce and vegetables. Season with black pepper and freshly chopped parsley.