Description
The Ultimate Green Bean Casserole with Potatoes is a gluten-free, creamy, and crispy side that shines on any table. Tender potatoes meet crisp green beans, mushrooms, and a velvety milk-based sauce, topped with cheddar and crunchy fried onions. Oven-baked to a golden crust, this comforting, crowd-pleasing dish pairs beautifully with roast meats or a hearty vegetarian main, with adaptable dairy-free options for wider enjoyment.
Ingredients
Scale
- 3 cups fresh green beans, trimmed and cut in half
- 3 medium potatoes, peeled and diced
- 1 small onion, finely chopped
- 2 cloves garlic, minced
- 1 cup sliced mushrooms (optional)
- 1 1/2 cups milk (or dairy-free alternative)
- 2 tbsp cornstarch mixed with 2 tbsp water
- 1 cup shredded cheddar cheese (or dairy-free cheese)
- 1 tsp salt
- 1/2 tsp black pepper
- 1 tsp paprika
- 1 cup crispy fried onions (gluten-free if needed)
- 2 tbsp olive oil
Instructions
- Preheat oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
- Boil the diced potatoes in salted water for 8–10 minutes until tender but not mushy. Drain and set aside.
- Steam or blanch the green beans for 5 minutes, then rinse under cold water to keep them crisp and green.
- In a large skillet, heat olive oil over medium heat. Add onions, garlic, and mushrooms (if using). Sauté until softened.
- Add milk, salt, pepper, and paprika. Slowly stir in the cornstarch mixture and cook until thickened into a creamy sauce.
- Stir in the cooked potatoes, green beans, and half of the cheese. Mix well.
- Transfer to the prepared baking dish, sprinkle remaining cheese on top, and bake for 20 minutes.
- Remove from oven, top with crispy fried onions, and bake for an additional 5–7 minutes until golden brown.
- Let it rest for 5 minutes before serving.
Notes
- Heavy cream can be substituted for milk for added richness; thin with a splash of water if needed.
- Fresh green beans give the best texture, but canned beans can be used—drain well and adjust cooking time accordingly.
- To keep the dish gluten-free, use gluten-free fried onions.
- For a dairy-free version, use dairy-free milk and cheese.
- Allow the casserole to rest about 5 minutes before serving for cleaner slices.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1/6 of casserole
- Calories: 410
- Sugar: 7 g
- Sodium: 550 mg
- Fat: 23 g
- Saturated Fat: 9 g
- Unsaturated Fat: 12 g
- Trans Fat: 0 g
- Carbohydrates: 40 g
- Fiber: 7 g
- Protein: 16 g
- Cholesterol: 70 mg
Keywords: green bean casserole, potatoes, creamy side dish, gluten-free, dairy-free option, oven baked, crowd-pleaser, family dinner, mushroom, fried onions