PREPARATION
First, steam the entire head of cabbage in a pot of boiling water, making sure to cut off the core first. Let the cabbage head boil for about 6-8 minutes — if you notice leaves separating from the head, you can gentlypeel awaythe softened leaves with a long fork. Drain the head of cabbage and peel the necessary amount of leaves when cool.
Grab a large bowl and combine the rice, egg, milk, onion, garlic powder, ground beef, ground pork, salt, and pepper. Scoop about a 1/4 cup of this mixture into the center of each cabbage leaf and roll them up, making sure to tuck in the ends.
If you’d like to slow cook them, place the rolls in the slow cooker. If you’d like to bake them, place them in a lightly greased 9×13 baking dish. If you are using the oven, preheat it to 350 degrees F.
In a separate bowl, mix together the tomato sauce, diced tomatoes, brown sugar, lemon juice, and Worcestershire sauce. Pour the sauce over the cabbage rolls.
If using the slow cooker, cover and cook on low for 8 to 9 hours. If using the oven, cover with foil and bake for 1 hour at 350 degrees F.