Borrego Assado com Batatas is a traditional Portuguese roast made with lamb and baby potatoes. The secret to this delicious lamb roast is the marinade made with lard, pepper paste, garlic, white wine, and a mix of spices and fresh herbs. Borrego Assado is one of my go-to recipes when I want to cook something special. It’s a hearty dish that’s perfect for the colder months, it feeds a family of six or eight, and it’s quite simple to make. In Portugal it’s often prepared on the Easter Sunday or Christmas dinner.
Portuguese Roast Lamb Recipe
Although I will be using a leg of lamb, this recipe can be prepared with other lamb cuts of your choice. The secret is to marinade the lamb overnight in a mix of lard, garlic, white wine, paprika, piri-piri powder, thyme, bay leaf, and massa de pimentos – a traditional Portuguese red pepper paste. Massa de pimentos is widely available in Portugal, for those from other parts of the world, you can simply replace it with blended roast peppers. A trick I borrowed from an English friend is to add a couple of spoons of mint sauce to the marinade, alternatively you can use fresh mint.
I prefer roasting the lamb in two stages, first at 180°C (fan oven) covered with foil for about 1h30m, although the time might vary depending on the size of the leg. You then remove the foil, add the baby potatoes (previously boiled), and roast again for about 15 minutes until golden and crispy. This recipe is an absolute crowd pleaser, uncomplicated, and a great way to add a Portuguese touch to your Sunday meals or festivities.

How to Make Portuguese Roast Lamb
Have you tried this recipe? Let me know in the comments!