Rinse rice well and set aside.
Combine the spice mix spices in a small bowl or measuring cup.
In a large skillet, heat a little olive oil and brown the pork, beef and onion together.
Once browned, add the beef broth and rice. Mix well over medium heat. Cover and set aside.
In a large bowl combine the tomatoes, tomato sauce, spice mix, Worcestershire sauce, and apple cider vinegar. Whisk all ingredients together. Add salt and pepper to taste.
Spray the bottom and sides of your Crockpot with oil spray to prevent sticking.
Then, begin layering the ingredients.
Line the bottom with 2 of the cabbage wedges, breaking them apart to cover the bottom of the dish.
Add ½ of the beef/pork/onion/rice mixture.
Add the bay leaf and ½ of the sauce. I like to put the bay leaf near the side of the dish so I can retrieve it easily after cooking.
Make the 2nd layer the same way.
Top the entire dish with the remaining sauce. I like to push the cabbage and meat layers a little away from the sides of the dish to let some of the sauce soak through.
Cover and cook on low for 8 hours.