Mix the curry powder with coconut milk and season lightly. The flavor should be similar to satay chicken marinade.

Pound the chicken breast to flatten it for rolling. Marinate the chicken with the curry coconut mixture and set aside.

Sauté the onion and potato together. Season with salt and pepper to taste.

Place the sautéed mixture on the chicken, then roll it up tightly using plastic wrap. Boil the wrapped chicken roll.

To make the sauce, combine Massaman curry paste, coconut milk, and ground peanuts. Season to taste and set aside.

Once the chicken is cooked, grill it until browned.

Arrange the finished roll on a plate as desired.