Preheat your oven to 350°F (175°C).
Bring a large pot of water to a boil.
Carefully remove the core from the cabbage.
Blanch the cabbage head for about 5 minutes until leaves are tender.
Gently peel off 12-15 leaves and set aside.
In a bowl, mix ground beef, cooked rice, chopped onion, garlic, paprika, salt, and pepper.
Take a cabbage leaf and place about 2 tablespoons of the meat mixture at the base.
Roll the leaf tightly, folding in the sides as you go.
Place the rolls seam-side down in a baking dish.
Pour tomato sauce over the rolls and cover with foil. Bake for 45 minutes.