Baked vegetables au gratin: the recipe for a simple and tasty baked side dish

Ingredients
POTATOES
3
COURGETTE
1
AUBERGINE
1
RED PEPPER
1
YELLOW PEPPER
1
GARLIC
2 cloves
BREADCRUMBS
180 gr
ROSEMARY
to taste
EXTRA VIRGIN OLIVE OIL
to taste
SALT
to taste
BLACK PEPPER
to taste
How to prepare the vegetables au gratin