Wash and chop all vegetables. Dice the onion, slice the mushrooms, and thinly slice the cabbage. Grate your mozzarella cheese and set everything aside.
In a skillet, sauté the diced onion in a little oil until softened. Add the beef chunks and cook until browned. Then, stir in the sliced mushrooms and cook until they release their moisture and become tender.
Once the beef is browned, add the smoked paprika, black pepper, salt, garlic powder, ginger spice, and turmeric. Pour tomato sauce as well. Stir well to combine and allow the flavors to develop for a few minutes.
Add in the cabbage, and cover it with a lid until it begins to soften but still has a little bite. This helps ensure it stays tender in the casserole. I usually leave it for an hour on a low heat.
Preheat the oven to 375°Fahrenheit (190°Celsius). Mix the cabbage and beef thoroughly. Top with grated mozzarella cheese and bake for about 15 minutes or until the cheese is bubbly and golden brown.
