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Thanksgiving Green Bean Casserole

Classic holiday casserole with green beans, creamy mushroom sauce, and crispy fried onions.

45 minEasyServes 8210 cal/serving

AmericanSideOvenVegetarianLow CarbLow-SodiumPork-FreeCorn-Free

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Ingredients

  • 1 lb fresh green beans, trimmed and cut into 2-inch pieces
  • 1 can condensed cream of mushroom soup (10.5 oz cans)
  • 1/4 cup milk
  • 1 tsp soy sauce
  • 1/4 tsp black pepper, freshly ground
  • 1/4 tsp garlic powder
  • 1 cup crispy fried onions, divided
  • 8 oz fresh mushrooms, sliced
  • 1 tbsp butter

Instructions

  1. 1

    Preheat your oven to 350°F (175°C) and lightly grease a 2-quart casserole dish.

  2. 2

    If using 1 lb trimmed and cut into 2-inch pieces fresh green beans, bring a large pot of salted water to a boil. Add the trimmed and cut green beans and blanch for 5 minutes, until bright green but still crisp. Drain and immediately plunge into ice water to stop the cooking process. Drain again and pat dry. (If using frozen green beans, thaw and drain them well.)

  3. 3

    In a large skillet, melt 1 tbsp butter over medium heat. Add 8 oz sliced fresh mushrooms and cook until they release their moisture and begin to brown, about 5-7 minutes.

  4. 4

    In a large mixing bowl, combine 1 can condensed cream of mushroom soup (10.5 oz cans), 1/4 cup milk, 1 tsp soy sauce, 1/4 tsp freshly ground black pepper, and 1/4 tsp garlic powder. Stir until well blended.

  5. 5

    Add the green beans and sautéed mushrooms to the soup mixture, along with half of 1 cup divided crispy fried onions. Gently fold everything together until the green beans are evenly coated.

  6. 6

    Transfer the mixture to the prepared casserole dish and spread it out evenly.

  7. 7

    Bake uncovered in the preheated oven for 25 minutes, until the mixture is hot and bubbling around the edges.

  8. 8

    Remove the casserole from the oven and sprinkle the remaining crispy fried onions evenly over the top.

  9. 9

    Return to the oven and bake for an additional 5-10 minutes, until the onions are golden brown and crispy.

  10. 10

    Let the casserole rest for 5 minutes before serving to allow the sauce to thicken slightly.

  11. 11

    This casserole can be prepared up to 24 hours in advance and refrigerated before baking. If baking from refrigerated, add an extra 5-10 minutes to the initial baking time.

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Questions

What is Thanksgiving Green Bean Casserole?

Classic holiday casserole with green beans, creamy mushroom sauce, and crispy fried onions. This reference files it under American side: made in the oven, rated easy and about 45 minutes start to finish.

How much time should I plan for Thanksgiving Green Bean Casserole?

As written, 45 minutes: 15 of prep and 30 of cooking. The longest single stretch is the hands-off wait in step 11, 24 hours. That wait sits outside the stated prep and cook times, so plan around it.

What oven temperature does Thanksgiving Green Bean Casserole need?

For Thanksgiving Green Bean Casserole, the oven is set to 350 F (about 175 C) in step 1. The longest stretch at that heat is 25 minutes, in step 7.

Why blanch first in Thanksgiving Green Bean Casserole?

Step 2 reads: "Add the trimmed and cut green beans and blanch for 5 minutes, until bright green but still crisp." The quick boil in step 2 sets the color and takes off the raw edge. If the step follows it with cold water, that is to stop the cooking at once so the vegetables stay bright and crisp.

Can I make Thanksgiving Green Bean Casserole dairy-free?

Yes. The dairy in Thanksgiving Green Bean Casserole is 1 can condensed cream of mushroom soup (10.5 oz cans), 1/4 cup milk, 1 tbsp butter. Swap the cream for full-fat coconut milk or an oat cooking cream; the milk for unsweetened oat or soy milk; the butter for olive oil where it melts, or a plant-based block butter where it is creamed. The richness shifts slightly, but the method does not change.

Is Thanksgiving Green Bean Casserole low-carb?

A serving of Thanksgiving Green Bean Casserole carries 20 g of carbohydrate, 2 g of it fiber. Against a strict 20 g keto day that is 100 percent of the budget; against a moderate 100 g low-carb day it is 20 percent.

How many carbs are in Thanksgiving Green Bean Casserole?

One serving (the recipe makes 8) has 20 g of carbohydrate in about 210 calories, with 5 g protein and 11 g fat, plus 2 g fiber and 360 mg sodium. The figures are estimates computed from the ingredient list.

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