
Start by placing the mozzarella cheese inside the glove with the ground beef and close the glove.
Transfer to a large skillet over medium heat with boiling water and cook for 10 minutes.
After this time has passed, remove from the hot water and set aside.
In the same water, add the ground beef meatballs and let them cook for 5 minutes.
Remove them from the water and set aside.
In a medium bowl, add the finely diced tomatoes, the mushrooms cut into smaller pieces, the grated mozzarella cheese and the mayonnaise.
Season with the salt, the black pepper and mix.
In a large baking tray, add the onions cut into rings, covering the entire bottom.
Then cover the onions with the potatoes cut into thin slices.
Season with salt and black pepper to taste.
Add the mixture we prepared and spread it evenly.
Next, add all the meat we cooked.
Season with salt and black pepper to taste.
Add the grated mozzarella cheese over everything.
Place in a preheated oven at 180° C (350° F) and bake for 30 minutes.
Serve.