
Tender, slow-braised oxtail seasoned with smoky spices gets tucked inside blistered poblano peppers alongside melted mozzarella. Coat them in a light, fluffy egg batter, fry until deeply golden, and serve over a rich tomato sauce for a truly satisfying Mexican-inspired feast.
Prep:less than 30 mins
Cook:over 2 hours
Serves:Serves 4
Dietary:Nut-free
By Matt TebbuttFrom Saturday Kitchen Recipes
This recipe receives a Nutri-Score of D due to the generous amount of olive oil used for searing and frying, alongside the natural fat content of the oxtail. While the dish provides a good amount of protein from the oxtail, eggs, and cheese, the frying process and chipotle paste increase the overall fat and calorie density, making it a wonderfully rich dish best enjoyed as an occasional treat.
Equipment
Ingredients
For the Mexican-style oxtail
- 8 pieces oxtail, around 1kg/2lb 4oz total weight
- 4 tbsp olive oil
- 2 onions, finely chopped
- 4 garlic cloves, sliced
- 1 tsp smoked paprika
- 1 tsp ground cumin
- 1 tsp chilli powder
- 300ml/10fl oz red wine
- 400g tin chopped tomatoes
- 20g/¾oz fresh oregano, leaves picked
- 10g/1/3oz thyme leaves
- 2 bay leaves
- 2 dried ancho chillies
- 3 tbsp chipotle paste
- 250ml/9fl oz chicken stock
- 50ml/2fl oz cider vinegar
- Salt and freshly ground black pepper
For the tomato sauce
- 2 tbsp olive oil
- 1 onion, chopped
- 3 garlic cloves, finely chopped
- 400g tin chopped tomatoes
- 1 tsp dried oregano
- 100ml/3½fl oz chicken stock
For the chile rellenos
- 4 large poblano peppers
- 200g/7oz mozzarella, torn into pieces
- 3 free-range eggs, separated
- 100g/3½oz plain flour
- Vegetable oil, for frying
- 2 tbsp chopped coriander, to serve
Customise
- Swap oxtail for slow-braised beef shin or short ribs if preferred.
- Replace mozzarella with a crumbly Mexican cheese like Cotija or a mature Cheddar.
- Use anchovy fillets instead of ancho chillies for a deeper, savoury umami hit.
- Swap poblano peppers for large mild green capsicums if poblanos are unavailable.
Method
Braise the Oxtail (2½ hours, can be done ahead)
- Season the oxtail generously with salt and pepper, then heat the olive oil in a large pan over a high heat until it starts to shimmer. Sear the oxtail pieces all over until they develop a beautiful deep brown crust, which adds so much flavour to the final dish.
- Remove the oxtail from the pan and turn the heat down to medium. Toss in the onions and garlic, cooking them gently for about 5 minutes until they soften and become fragrant.
- Add the smoked paprika, ground cumin, and chilli powder, stirring everything together to toast the spices for a further 2 minutes. Pour in the red wine and let it bubble away until it reduces by half, concentrating that lovely richness.
- Tip in the chopped tomatoes, followed by the fresh oregano, thyme, bay leaves, dried ancho chillies, chipotle paste, and chicken stock. Return the oxtail to the pan, bring everything to a gentle simmer, and let it cook slowly for around 2½ hours until the meat is incredibly tender and falling off the bone.
- Lift the oxtail out of the pan once it is perfectly tender, and pick the meat off the bones, shredding it into bite-sized pieces. Place the pan back on the heat and let the remaining stock reduce by half.
- Season the reduced stock to taste with salt and pepper, then stir in the cider vinegar to give it a pleasant tang. Fold the shredded oxtail meat back through the rich sauce and set it aside.
Make the Tomato Sauce (45 minutes, can overlap with oxtail braising)
- Heat the olive oil in a separate saucepan over a medium heat. Add the chopped onion and garlic, cooking them slowly for 20 minutes until they are completely soft and sweet.
- Add the chopped tomatoes, dried oregano, and chicken stock to the pan. Simmer the sauce gently for a further 25 minutes until it thickens nicely, then blend it until completely smooth or leave it slightly chunky if you prefer.
Prepare the Peppers (15 minutes)
- Blacken the poblano peppers by roasting them in a very hot oven at 230C/210C Fan/Gas 8 or by placing them directly over a gas flame until the skins are completely charred and blistered all over.
- Pop the blistered peppers into a bowl and cover them to let them steam until they are cool enough to handle. Gently peel off the charred skin, taking care to keep the peppers intact.
- Split the peppers vertically and carefully open them up. Stuff each one with a generous helping of the braised oxtail and some torn mozzarella, then secure the opening with a cocktail stick to hold all that lovely filling inside.
Fry and Serve (10 minutes)
- Whisk the egg whites in a bowl until they form soft, foamy peaks, then lightly whisk the egg yolks in another bowl. Gently fold the yolks into the whites to create a light, airy batter that will puff up beautifully when fried.
- Dip each stuffed pepper into the plain flour, shaking off any excess, then coat them thoroughly in the fluffy egg mixture.
- Heat enough vegetable oil to shallow fry in a large frying pan over a medium heat. Cook the peppers for 1–2 minutes on each side until they turn a gorgeous golden brown.
- Transfer the fried chile rellenos to a plate lined with kitchen paper to drain off any excess oil. Serve them immediately on top of the rich tomato sauce, scattered with freshly chopped coriander.


