Start by heating olive oil in a large sauté pan over medium heat. Sauté the onion and garlic until translucent and fragrant.
Add the ground beef to the pan, breaking it apart with a spoon. Cook until browned, then season with thyme, oregano, salt, and pepper. Stir in the parsley for fresh flavor.
Transfer the beef mixture to your slow cooker. Pour in the marinara sauce and water, stirring to combine all the ingredients.
Add the riced cauliflower and sliced cabbage to the slow cooker, ensuring they are fully submerged in the liquid.
Cover and set your slow cooker on low for 6-8 hours or on high for 3-4 hours, until the cabbage is tender and the flavors have melded together beautifully.
Serve this deconstructed cabbage roll soup hot, offering a comforting and satisfying meal that guests will request time and time again. Its simplicity and deliciousness make it a perfect dish for any occasion, promising all the flavors of traditional cabbage rolls without the fuss