In a deep frying pan, heat 1 tablespoon of vegetable oil over medium heat. Once hot, add 2 diced shallots. Fry them until they begin to brown.
Increase the heat and introduce 400g of diced chicken thighs to the pan. Ensure all sides of the meat are seared until browned.
Sprinkle 1 teaspoon each of ground cumin and ground coriander into the pan. Follow this with 2 sliced carrots. Stir the mixture and let it cook for an additional 2 minutes.
Add the Massaman curry paste, ground cardamom, a cinnamon stick and a pinch of nutmeg to the pan. Cook until the mixture becomes fragrant, which should take about a minute. If your paste is shop-bought, start with a spoonful less than the amount above and top up after tasting, since ready-made pastes are usually stronger than homemade.
Introduce halved waxy potatoes, coconut milk, peanut butter, and thinly sliced Kaffir lime leaves into the pan. Stir the mixture until the peanut butter is thoroughly blended. Allow it to simmer for approximately 40 minutes, or until the chicken becomes tender, stirring from time to time.
Once the chicken is cooked through, remove the cinnamon stick and ladle the curry over jasmine rice. Garnish with toasted peanuts, fresh coriander and a squeeze of lime.