This slow cooker green bean casserole is a creamy, crowd-pleasing side dish perfect for potlucks and holiday gatherings. With minimal prep and classic flavors, it frees up oven space and delivers perfectly tender green beans with a crispy onion topping.
For gluten-free, use gluten-free mushroom soup and crispy onions. For dairy-free, use plant-based milk and cheese. Add crispy onions just before serving for best texture. Prep the night before and refrigerate the insert for easy make-ahead. Stir gently halfway through for even cooking. Add cooked bacon or smoked paprika for extra flavor. Leftovers keep well for up to 4 days in the fridge.
Keywords: slow cooker, green bean casserole, potluck, holiday side, easy, creamy, vegetarian, Thanksgiving, Christmas, comfort food