Juicy meat cutlets in the oven. Very simple and delicious

Ingredients:
Minced meat - 800 g.
Onion - 1 pc.
Salt
sweet pepper
dry garlic
Black pepper
Filling:
Onion - 1 piece (small)
Tomatoes - 150 g.
Peppers - 1/3 pcs.
Cheese - 140 g.
pinch of salt
Black pepper
Mayonnaise - 1 tbsp.
Vegetable fat
Bake for 35 - 40 minutes at 180 °C.
Bon appetit!