Make this green bean casserole recipe for a classic holiday side dish. Creamy mushroom sauce surrounded by tender green beans, topped with the crunchy flavor of French's Crispy Fried Onions make this holiday casserole an instant classic. Source: McCormick
Make green bean casserole with canned, frozen (thawed), or fresh green beans. If using fresh green beans, they work best when blanched beforehand so they fully cook in the oven along with the creamy mushroom sauce.
Can you make Green Bean Casserole ahead of time? Sure!
* Prepare this casserole through Step 1. Cover tightly with plastic wrap and a layer of foil for extra freezer burn protection. Freeze until ready to serve.
* Thaw in the refrigerator the night before baking, then start with Step 2 (Make sure to remove the plastic wrap and foil).
* To bake from frozen, let stand 10 minutes at room temperature. Start with Step 2, but increase the bake time in 15-minute increments until the center reaches 160°F.