In Season: Cauliflower season begins in October and extends through April. However, many markets carry it year-round.What to Look For: Look for creamy white, unblemished heads with tight florets and fresh-looking leaves. In season, cauliflower can also be found with bright-orange or purple florets.How to Store: When wrapped tightly in plastic, cauliflower heads can be refrigerated for three to five days.
Another firm-fleshed fish, such as halibut or salmon, can be substituted for the striped bass. Broilers vary in heat intensity; move the rack to a lower position if the cauliflower or fish is browning too quickly, or to a higher rack if too slowly.
Adding toasted whole-wheat breadcrumbs gives this dish a nice crunch that balances out the creaminess of the sauce. Rather than baking the shells with the crumbs on top (which can make them soggy), toast the breadcrumbs separately, and toss a handful over each serving right before you put it on the table.