Sauté the bacon and onion in a large skillet set over medium-high heat. Once cooked, transfer the bacon and onion to the crockpot and drain the grease from the cooking pan.
1 pound thick-cut bacon, 1 onion
Add the ground beef to the same skillet and cook until no pink remains. Transfer the cooked ground beef to the crockpot.
1 pound lean ground beef
Add all of the remaining ingredients to the crockpot, stir, and place the bay leaves last on top.
1 tablespoon minced garlic, 1 cup chopped carrots, 5 cups chopped cabbage, 28 ounces diced fire roasted tomatoes, 16 ounces tomato sauce, 6-8 cups low-sodium beef broth, ¾ cup dry long-grain rice, 1 tablespoon Worcestershire sauce, 1½ teaspoons smoked paprika, ¾ teaspoon dried thyme, ½ teaspoon dried marjoram, 2 bay leaves
Cover the crockpot with the lid and cook on high for 3 hours or on low for 5-6 hours.
Remove the bay leaves, season with salt and pepper, top with Parmesan, and serve.
Kosher salt and freshly ground black pepper, Freshly grated Parmesan cheese