3 cauliflower gratin capers Recipes

head cauliflower (about 1 3/4 lb), olive oil, sweet onion, chopped, capers, drained, fine dry breadcrumbs, parmesan or swiss cheese, grated, ground black pepper

unsalted butter, for dish , plus 1/2 stick (4 tbsp), cut into 1/2-inch pieces, day-old sourdough bread or 2 cups bread crumbs, heavy cream, all-purpose flour, capers, rinsed and drained, bacon , cooked until crispy and cut into 1/2-inch pieces, grated gruyere, divided, kosher salt and freshly ground black pepper, cauliflower, trimmed and cut into florets, olive oil, for drizzling