Hearty Beef and Potato Casserole

Step 1: Season the Beef

1. Rub the beef: Season the beef with salt and black pepper to taste. Set aside.

Step 2: Prepare the Potato Mixture

1. Grate the potatoes: Peel and grate the potatoes.
2. Mix the cheese ingredients: In a large bowl, combine the grated potatoes, mozzarella cheese, cottage cheese, mayonnaise, and mustard. Mix until well combined.

Step 3: Cook Potatoes and Onions

1. Heat the olive oil: In a large pan, heat olive oil over medium heat.
2. Sauté the vegetables: Add the grated potatoes and sliced onion to the pan. Sauté until they are golden brown and crispy, about 10-15 minutes.

Step 4: Combine Ingredients

1. Add the beef: Add the seasoned beef to the pan with the potatoes and onions. Stir to combine.
2. Pour the cheese mixture: Pour the cheese mixture over the top of the beef and potato mixture, ensuring it covers everything evenly.

Step 5: Simmer

1. Cover and cook: Cover the pan and simmer for 15-20 minutes, or until the beef is cooked through and the cheese is melted and bubbly.

Step 6: Serve

1. Serve hot: Enjoy this comforting dish hot, straight from the pan.