Fill up a medium size pot with water and bring to a boil.
Remove the cabbage stem at the bottom with a knife.
When the water is boiling, sprinkle a pinch of salt and add the cabbage. Cover and cook for 10 minutes, or until you can easily separate the cabbage leaves and they are completely soft.
Preheat the oven to 350 F (180 C).
Separate all the cabbage leaves and remove the vein part.
Follow the video to learn how to stuff the leaves and close them.
Add the thinly sliced onion to the bottom of the deep pan and arrange the stuffed cabbage rolls on top.
Brush the rolls with date syrup and add all the rest of the sauce ingredients.
Cover the pan with a kitchen towel, put the lid on top and bake for 90 minutes.
Uncover the pan and "water" the stuffed cabbage rolls with the sauce. If there is no sauce left, pour ⅓ cup boiling water to the bottom of the pan, avoiding direct contact with the cabbage rolls.
Increase the temperature to 390 F (200 C) and bake uncovered until you get a beautiful brownish color.