Green Bean and Pearl Onion Casserole Recipe | Tyler Florence | Food Network

Ingredients

• Kosher salt
• 1 1/4 pounds green beans, trimmed
• 2 cups pearl onions
• 2 tablespoons extra-virgin olive oil
• 2 tablespoons unsalted butter
• 2 cloves garlic, minced
• 1 shallot, chopped
• 2 bay leaves
• 3 cups assorted mushrooms (such as oyster, cremini and shiitake), trimmed and sliced
• 2 tablespoons fresh thyme
• Freshly ground pepper
• 3 tablespoons all-purpose flour
• 3 cups whole milk
• Vegetable oil, for frying
• 4 shallots, thinly sliced
• All-purpose flour, for coating