Steak Diane Casserole | Easier Eats

Ingredients

• 2 tablespoons vegetable oil
• 3 pounds braising beef, chopped into bite-sized chunks
• 3 tablespoons all-purpose flour
• 1/2 teaspoon kosher salt
• 1/2 teaspoon freshly ground black pepper, plus more, to taste, for garnish
• 1 large onion, chopped
• 4 cloves garlic, minced
• 2 tablespoons tomato paste
• 4 tablespoons brandy
• 1 tablespoon Worcestershire sauce
• 4 1/4 cups beef stock, plus more, to taste
• 10 1/2 ounces chestnut mushrooms
• 1 tablespoon cornstarch
• 3 tablespoons cold water
• 1/2 cup heavy cream
• 1 small bunch fresh parsley, roughly chopped, for garnish