Description
The Ultimate Green Bean Casserole with Potatoes: a creamy, savory gluten-free twist on a classic, pairing tender green beans and potatoes in a rich mushroom sauce topped with crispy fried onions.
Ingredients
Scale
- 1 lb fresh green beans, trimmed and halved
- 3 medium potatoes, peeled and sliced thin
- 2 tbsp butter
- 1 tbsp olive oil
- 1 small onion, finely chopped
- 2 cloves garlic, minced
- 1 cup fresh mushrooms, sliced
- 2 tbsp gluten-free flour or cornstarch
- 1 ½ cups milk (or dairy-free milk if preferred)
- ½ cup vegetable broth
- ½ tsp salt
- ¼ tsp black pepper
- ½ cup shredded cheese (optional for extra creaminess)
- 1 cup crispy fried onions (gluten-free if needed)
Instructions
- Preheat oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
- Bring a pot of salted water to a boil. Add potatoes and cook for 5 minutes. Add green beans and cook for 3 more minutes. Drain and set aside.
- In a skillet, melt butter and olive oil. Add onion and garlic, cooking until fragrant. Stir in mushrooms and cook until tender.
- Sprinkle gluten-free flour or cornstarch over the mushrooms. Slowly whisk in milk and broth until smooth and thickened. Season with salt and pepper.
- In the baking dish, layer potatoes and green beans, then pour the creamy mushroom sauce over. Gently toss to coat evenly.
- Sprinkle cheese (if using) and top with crispy fried onions.
- Bake for 25–30 minutes until bubbling and golden brown on top. Serve warm and enjoy!
Notes
- Gluten-free: Use gluten-free flour or cornstarch.
- Diet-friendly: Can be made vegan by using dairy-free milk and skipping cheese.
- Make ahead: Assemble the dish, refrigerate up to 1 day, then bake.
- Leftovers reheat well in 350°F (175°C) oven for 15 minutes.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: Casserole / Side dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving (about 1/6 of recipe)
- Calories: N/A
- Sugar: N/A
- Sodium: N/A
- Fat: N/A
- Saturated Fat: N/A
- Unsaturated Fat: N/A
- Trans Fat: N/A
- Carbohydrates: N/A
- Fiber: N/A
- Protein: N/A
- Cholesterol: N/A
Keywords: The Ultimate Green Bean Casserole with Potatoes, green bean casserole, potatoes, creamy mushroom sauce, gluten-free casserole, comfort food, family dinner, potluck