Brussels Sprouts Gratin

Bahan-bahan (6 porsi)

• 2 pounds Brussels sprouts, (stem ends trimmed and cut in half through the stem end)
• 3 tablespoons unsalted butter, (melted)
• Salt
• Freshly ground black pepper
• 1 cup coarse fresh bread crumbs, (from about 3 slices white sandwich bread, crusts removed)
• ¼ cup finely grated Gruyère
• 1¼ cups heavy cream, (at room temperature)