I learned this recipe in a restaurant, my family asks me to do it always!

Instructions:

1. Season the beef: Rub beef with salt and pepper.
2. Prepare potato mixture: Grate potatoes. Combine mozzarella, cottage cheese, mayonnaise, and mustard.
3. Cook potatoes and onions: Sauté grated potatoes and sliced onion in olive oil until golden brown.
4. Combine ingredients: Add seasoned beef to the pan with potatoes and onions. Pour cheese mixture over the top.
5. Simmer: Cover and simmer for 15-20 minutes, or until beef is cooked through.
6. Serve: Enjoy!