Preheat the oven to 350°F and spread 3/4 cup of tomato sauce across the bottom of a 9×13-inch baking dish.
Boil a large pot of water and immerse the cabbage, cooking for 4–6 minutes until the leaves are pliable.
Alternatively, freeze the cored cabbage overnight, thaw it the next day, and use the softened leaves.
Drain the cooked cabbage or prepare thawed leaves, then let them cool.
Heat oil in a large pan over medium heat.
Sauté cauliflower rice, onion, and garlic until tender and lightly browned, about 5 minutes.
Combine the sautéed mixture with the remaining filling ingredients, reserving 1/2 cup of tomato sauce, and mix well.
Carefully separate 12 cabbage leaves and lay them flat.
Trim a small "V" at the base of each leaf to remove the tough stem.
Take 1/12 of the filling, shape it into a log, and place it in the center of a cabbage leaf.
Roll the leaf tightly, folding in the sides, and place the seam side down in the prepared baking dish.
Repeat the rolling process with the remaining leaves and filling.
Pour the remaining 3/4 cup of tomato sauce evenly over the rolls.
Cover the dish tightly with foil.
Bake for 1 hour or until the filling is fully cooked.
Cabbage stuffed roll is perfectly cooked and ready to be served.