Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon

Homemade Green Bean Casserole with Creamy Mushroom Sauce and Crispy Onions Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

3.9 from 61 reviews

  • Author: Sky
  • Total Time: 1 hour 20 minutes
  • Yield: Serves 8
  • Diet: Vegetarian

Description

This homemade Green Bean Casserole offers a fresh and flavorful twist on the classic holiday side dish. Made with tender blanched green beans and a creamy mushroom sauce prepared from scratch, this casserole is topped with crispy fried onions for added texture and taste. Perfect for festive gatherings, it brings together wholesome ingredients in a comforting baked dish.

Ingredients

Vegetables

  • 1½ pounds green beans, trimmed and halved
  • 16 ounces cremini mushrooms, sliced
  • 4 garlic cloves, minced
  • 2 tablespoons fresh thyme leaves

Sauce

  • 2 tablespoons extra-virgin olive oil
  • 2 tablespoons tamari
  • ¼ cup all-purpose flour
  • 3 cups milk, any kind
  • 1½ teaspoons Dijon mustard
  • ½ cup grated Parmesan cheese, plus more for sprinkling
  • ¼ teaspoon freshly ground black pepper

Topping

  • 1½ cups French fried onions, or homemade Crispy Baked Onions

Instructions

  1. Preheat and Prepare Baking Dish: Preheat your oven to 400°F (200°C). Lightly grease a 9x13-inch baking dish with oil or butter to prevent sticking.
  2. Blanch Green Beans: Bring a large pot of salted water to a boil. Prepare a bowl with ice water nearby. Add the trimmed and halved green beans to the boiling water and blanch them for 4 minutes. Immediately transfer the green beans to the ice water to stop the cooking process. Drain thoroughly and pat dry with a clean towel.
  3. Cook Mushrooms and Make Sauce: Heat the extra-virgin olive oil in a large skillet over medium heat. Add the sliced cremini mushrooms and cook until they become soft, about 8 to 10 minutes. Stir in the tamari, minced garlic, and fresh thyme leaves. Sprinkle the all-purpose flour over the mushrooms and stir well to combine. Gradually add the milk and Dijon mustard, whisking frequently. Let the sauce simmer and thicken for 15 to 20 minutes. Finally, stir in the grated Parmesan cheese and freshly ground black pepper.
  4. Assemble the Casserole: Spread one-third of the mushroom sauce evenly on the bottom of the prepared baking dish. Layer the blanched green beans evenly over the sauce. Pour the remaining sauce over the beans, spreading it out evenly. Sprinkle the French fried onions or homemade crispy baked onions evenly on top.
  5. Bake the Casserole: Cover the baking dish and bake in the preheated oven for 10 minutes. Then, remove the cover and bake for another 10 minutes uncovered. If the onions begin to brown too quickly, cover the dish with foil for the remainder of the baking time.
  6. Garnish and Serve: Optional—sprinkle additional grated Parmesan cheese on top before serving. Serve the casserole hot as a delicious side dish.

Notes

  • You can use store-bought French fried onions or make your own crispy baked onions for the topping.
  • Ensure the green beans are thoroughly dried after blanching to prevent a watery casserole.
  • Adjust seasoning by adding salt if needed since tamari adds saltiness.
  • If you prefer a thicker sauce, you can cook it longer or add a bit more flour initially.
  • Prep Time: 20 minutes
  • Cook Time: 1 hour
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American

Find it online: https://skysrecipes.com/homemade-green-bean-casserole-with-creamy-mushroom-sauce-and-crispy-onions-recipe/