French-Style Ground Meat with Mushrooms

Peel and finely chop the onion. Chop the mushrooms into small pieces as well. Heat vegetable oil in a skillet, add the chopped onion and mushrooms, and sauté for 5–7 minutes until the onion is soft and the mushrooms have reduced in size.

Season the ground meat with salt and pepper, and add the egg. Mix until thoroughly combined. Gently toss the meat mixture against the bottom of the bowl a few times to make it denser.

Shape the meat mixture into small patties and place them in a greased baking dish.

Spread a thin layer of mayonnaise over each patty to keep the meat juicy.

Spoon the mushroom topping evenly over the meat patties.

Slice the tomatoes into rounds and grate the cheese. Arrange the tomato slices on top and sprinkle with the grated cheese. Bake in a preheated oven at 180°C (350°F) for 30–45 minutes, adjusting the time to suit your oven.