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Green Bean Casserole with Crispy Shoestring Fries Recipe

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3.8 from 38 reviews

This classic Green Bean Casserole recipe offers a deliciously creamy and savory vegetable dish topped with crispy shoestring fries. Combining fresh green beans, sautéed mushrooms, caramelized onions, and a rich mushroom sauce, this casserole is baked to perfection for a comforting side dish suitable for family dinners and holiday meals.

  • Total Time: 1 hour
  • Yield: 8 servings

Ingredients

Vegetables

  • 1 lb (450 g) fresh green beans, trimmed and cut into 1-inch pieces (or 2 cans of green beans, drained)
  • 8 oz (225 g) fresh mushrooms, sliced
  • 1 medium onion, thinly sliced
  • 2 cloves garlic, minced

Sauce

  • 2 tablespoons olive oil or butter
  • 2 tablespoons all-purpose flour
  • 1 cup vegetable or chicken broth
  • ½ cup milk (or non-dairy milk)
  • 1 teaspoon soy sauce
  • Salt and pepper, to taste

Topping

  • Frozen shoestring fries (quantity as needed to cover casserole)

Instructions

  1. Preheat oven: Set your oven to 450°F (232°C) to prepare for baking the shoestring fries.
  2. Bake fries: Arrange frozen shoestring fries in a single layer on a baking sheet and bake for 15 minutes until starting to crisp.
  3. Sauté onions: In a large skillet, heat olive oil or butter over medium heat. Add the thinly sliced onions and cook, stirring occasionally, for about 10 minutes until caramelized and golden brown.
  4. Add mushrooms and garlic: Add the sliced mushrooms and minced garlic to the caramelized onions. Continue cooking for 5-7 minutes until the mushrooms are tender and any released liquid has evaporated.
  5. Incorporate soy sauce: Pour the soy sauce over the mushroom mixture and stir to combine evenly, enhancing the umami flavor.
  6. Make roux: Sprinkle the flour over the mushroom mixture and stir well. Cook this for 1-2 minutes to eliminate the raw flour taste and help thicken the sauce.
  7. Add broth and thicken: Gradually pour in the vegetable or chicken broth while stirring constantly. Continue stirring until the mixture thickens into a creamy sauce.
  8. Add milk and season: Stir in the milk, then season with salt and pepper to taste. Mix everything well to create a smooth, flavorful sauce.
  9. Combine green beans: Add the trimmed green beans to the skillet with the mushroom sauce. Stir thoroughly to coat the beans in the sauce.
  10. Preheat oven again: Lower the oven temperature to 350°F (175°C) for baking the casserole.
  11. Prepare casserole dish: Grease a 9 x 13-inch baking dish. Pour the green bean and mushroom mixture evenly into the dish.
  12. Bake casserole: Bake in the preheated 350°F oven for 20 minutes to heat through and meld flavors.
  13. Add fries topping: Remove the casserole from the oven and evenly spread the baked shoestring fries over the top.
  14. Final bake: Return the casserole to the oven and bake for an additional 10-15 minutes until the fries are golden, crispy, and the casserole is thoroughly heated.

Notes

  • For a creamier texture, use whole milk or a creamy non-dairy milk alternative.
  • Fresh green beans provide the best texture, but canned green beans can be used as a shortcut. Drain well before using.
  • If you prefer a less salty dish, reduce or omit the soy sauce, or use a low-sodium version.
  • The frozen fries topping adds great texture, but you can substitute with fried onions or crushed crispy onions for a traditional twist.
  • Make sure to caramelize the onions properly to deepen the flavor of the mushroom sauce.
  • Author: Madelynn
  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian