Cut the beef brisket into bite-sized pieces.
Slice the onion, potato, and broccoli thinly after prepping them.
Heat olive oil in a pan and sauté the beef brisket and vegetables.
Season with salt and pepper.
Transfer the sautéed ingredients into an oven-safe dish.
Mix milk and heavy cream, then pour over the ingredients.
Generously top with mozzarella cheese.
Bake in a 180°C oven for 15 minutes.