The Ultimate Green Bean Casserole with Crispy Fried Shallots

INGREDIENTS

• Unsalted butter for baking dish, plus 2 Tbs.
• Canola oil for frying, plus 1 Tbs.
• 3/4 cup all-purpose flour
• Kosher salt and freshly ground black pepper, to taste
• Cayenne pepper, to taste
• 6 large shallots, peeled and sliced into thin rings
• 1 lb. cremini mushrooms, sliced
• 1/4 cup finely chopped shallots
• 1 cup chicken stock
• 1 cup heavy cream
• 2 lb. green beans, trimmed, halved and blanched