The best BAKED COD I've had so far

What ingredients do I need to make this baked cod recipe?
Desalted cod, 800 g.
Medium potatoes, 800 g.
1 large onion.
3 garlic cloves.
2 bay leaves.
Cherry tomatoes, 200 g.
Black olives.
Breadcrumbs, 2 tbsp.
Extra virgin olive oil.
Salt and pepper.