This gluten-free green bean casserole is a healthier, dairy-free twist on a beloved holiday classic. With fresh green beans, a creamy mushroom sauce, and a crunchy topping, it’s perfect for Thanksgiving, Christmas, or any special occasion.
1lbfresh green beanstrimmed and cut into 1-inch pieces
1tbspolive oil
1cupmushroomssliced
2clovesgarlicminced
2tbspgluten-free flour or cornstarch
1cupplant-based milkalmond, oat, or cashew
1tspsalt
1/2tspblack pepper
1/4tspnutmegoptional
1large onionthinly sliced
1cupgluten-free breadcrumbs or crushed nuts
Instructions
Prepare the Green Beans:
Boil salted water in a large pot. Blanch green beans for 2–3 minutes until tender. Drain and transfer to an ice bath to preserve their color and crunch.
Make the Mushroom Sauce:
Heat olive oil in a skillet. Sauté mushrooms until golden. Add garlic and cook for 1 minute.
Sprinkle gluten-free flour over mushrooms and stir. Gradually add plant-based milk, whisking until the sauce thickens. Season with salt, pepper, and nutmeg.
Prepare the Crispy Topping:
Toss onion slices in gluten-free breadcrumbs, garlic powder, and a pinch of salt. Spread on a baking sheet and bake at 400°F for 15–20 minutes until golden.
Assemble the Casserole:
Preheat oven to 350°F. Combine green beans and mushroom sauce in a casserole dish. Top with crispy onions.
Bake for 20–25 minutes until bubbly and golden.
Notes
Make-Ahead Tips: Prepare green beans and sauce up to 3 days in advance. Store separately in the fridge.
Storage: Refrigerate leftovers for up to 3 days or freeze for up to 1 month. Reheat at 350°F until warmed through.
Variations: Substitute slivered almonds with pumpkin seeds for a nut-free option, or add caramelized onions for extra sweetness.