Green Bean Casserole

The beloved holiday side dish featuring tender green beans in a creamy mushroom sauce, topped with crispy fried onions. Made from scratch, this version elevates the classic to something truly special.

Side Dishes · Prep 20 min · Cook 30 min · Serves 8 · Easy · By Tina · Published

Green Bean Casserole - side dishes recipe

Ingredients

  • 1.5 lbs fresh green beans, trimmed
  • 8 oz cremini mushrooms, sliced
  • 3 tbsp butter
  • 2 medium shallots, diced
  • 2 cloves garlic, minced
  • 3 tbsp all-purpose flour
  • 0.75 cup chicken broth
  • 0.75 cup heavy cream
  • 1.5 cups crispy fried onions
  • 1 tsp salt
  • 0.5 tsp pepper
  • 1 pinch nutmeg

The Side Dish That Steals the Show

Let me tell you something: green bean casserole does not get nearly enough credit. Every year at Thanksgiving, it sits quietly on the table while the turkey hogs the spotlight, but I have watched people go back for seconds and thirds of this dish more times than I can count. When you make it from scratch -- with real mushrooms, real cream, and those gloriously crunchy fried onions on top -- it is an entirely different experience from the canned-soup version.

This is my go-to version, and I genuinely believe it could convert anyone who thinks they do not like green bean casserole.

Prepping the Beans for Maximum Crunch

Trim the ends off a pound and a half of fresh green beans and cut them into two-inch pieces. Bring a big pot of salted water to a rolling boil and blanch the beans for 4 to 5 minutes until they are bright green and still have a nice snap to them. Immediately drain them and plunge them into a bowl of ice water. This stops the cooking dead in its tracks and locks in that vibrant color. Drain well and set aside.

The From-Scratch Mushroom Sauce

Melt three tablespoons of butter in a large skillet over medium heat. Add eight ounces of sliced cremini mushrooms and cook for 5 to 6 minutes, stirring occasionally, until they release their liquid and turn a gorgeous golden brown. Toss in two diced shallots and two cloves of minced garlic, cooking for another 2 minutes until everything is fragrant and soft.

Sprinkle three tablespoons of flour over the mushroom mixture and stir for a solid minute to cook out that raw flour taste. Now slowly pour in three-quarters of a cup of chicken broth, whisking as you go to keep things smooth. Follow with three-quarters of a cup of heavy cream in a steady stream, still whisking. Season with salt, pepper, and just a pinch of nutmeg -- the nutmeg is subtle but it ties everything together beautifully. Let the sauce simmer for 3 to 4 minutes until it thickens enough to coat the back of a spoon.

Bringing It All Together

Preheat your oven to 190°C/375°F. Fold the blanched green beans into the mushroom sauce until every bean is coated. Pour the whole thing into a two-quart baking dish and spread it into an even layer.

Bake uncovered for 20 minutes until the sauce is bubbling happily around the edges. Pull it out and scatter a generous cup and a half of crispy fried onions over the top. Slide it back into the oven for 5 more minutes until those onions are warmed through and extra crispy.

Serve It Proud

Let it rest for just a few minutes, then bring it to the table. Watch it disappear. This pairs perfectly with roasted turkey, glazed ham, or honestly, just a big plate of mashed potatoes.

Tina's Tips

  • Do not skip the blanching step. It keeps the beans bright green and prevents them from turning mushy during baking. The ice bath is non-negotiable.
  • Use cremini mushrooms, not button. Creminis have a deeper, earthier flavor that makes the sauce taste richer and more complex.
  • Make the sauce ahead. You can prepare the mushroom cream sauce up to a day in advance. Fold in the beans and bake right before serving.
  • Double the fried onions. I always use more than the recipe calls for. Nobody has ever complained about too many crispy onions on top.
  • Add a splash of soy sauce. A teaspoon of soy sauce stirred into the cream sauce adds incredible depth without tasting remotely Asian. Trust me on this one.

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