This green bean casserole with Worcestershire sauce is a delicious twist on the classic side dish. It's creamy, packed with flavor, and topped with crispy French onions—perfect for Thanksgiving or any meal!
Preheat oven to 350°F. Lightly coat a medium baking dish (1.5 - 2 quarts) with nonstick cooking spray and set aside.
In a large mixing bowl, stir to combine cream of mushroom soup, milk, Worcestershire sauce, garlic powder, salt, and pepper
Stir in the green beans and half the crispy fried onions.
Transfer the green bean mixture to the prepared baking dish and bake uncovered for 25-30 min, or until the center of the casserole is bubbly. Remove from oven, top with the remaining onions, and bake for an additional 5-10 minutes, or until the onions are golden brown.
Allow to rest for 5 minutes before serving.
Notes
For fresh green beans: Trim and cut 1.5 pounds (4 cups) fresh green beans into bite-sized pieces. Simmer for 7-8 minutes or until fork tender. Drain, rinse with cold water, and pat dry.
For frozen green beans: Simmer for about 5 minutes or until fork tender. Drain, rinse with cold water, and pat dry.
In the slow cooker: Slow cook on low for 2-3 hours. Top with onions and serve.
Make ahead: Prep, cover, and refrigerate for up to 2 days before baking. You can also freeze the casserole for up to 2 months and thaw overnight in the refrigerator before baking. You will need to add about 5-10 more minutes to the cook time. For best results, wait to add the crispy onions until directed in the recipe.
Storage: Store leftovers covered or in an airtight container in the fridge for up to 3 days. Reheat individual portions in the microwave or to reheat remaining casserole, cover the casserole dish with foil and reheat in the oven at 350°F.