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Homemade Green Bean Casserole from Scratch recipe photo

Green Bean Casserole from Scratch

Classic green bean casserole made from scratch with mushrooms and a creamy homemade sauce, topped with French fried onions.
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Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings: 8 servings
Course: Side Dish
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

Ingredients
  • 2 tablespoonsbutter
  • 1 tablespoonminced garlic
  • 2 tablespoonsflour
  • 1 cupchicken broth
  • 1 cupwhole whipping cream
  • 1/2 teaspoonsalt
  • 1/4 teaspoonblack pepper
  • 8 ouncessliced fresh mushrooms
  • 1 container6 oz French friend onions, divided
  • 1 bag16 oz french style frozen green beans, thawed

Equipment

  • Casserole dish
  • Skillet
  • Whisk
  • Oven

Method
 

Instructions
  1. Preheat the oven to 400°F. Grease a casserole dish and set it aside.
  2. In a skillet over medium heat, add 2 tablespoons butter. When the butter has melted, add 1 tablespoon minced garlic and cook, stirring, until fragrant (about 30 seconds).
  3. Stir in 2 tablespoons flour and cook, stirring constantly, for about 1 minute to form a roux.
  4. Gradually whisk in 1 cup chicken broth and 1 cup whole whipping cream until smooth.
  5. Continue to cook the sauce over medium heat, whisking frequently, until it becomes bubbly and begins to thicken, about 8 minutes.
  6. Remove the skillet from the heat. Stir in 8 ounces sliced fresh mushrooms, the 16-ounce bag of thawed French-style green beans (drain or pat dry if there is excess water), 1/2 teaspoon salt, and 1/4 teaspoon black pepper.
  7. Add half of the 1 (6-ounce) container of French fried onions to the mixture (reserve the remaining half of the container for the topping). Mix everything until evenly combined.
  8. Pour the green bean mixture into the prepared casserole dish and spread it into an even layer.
  9. Sprinkle the reserved remaining half of the 6-ounce container of French fried onions evenly over the top.
  10. Bake for 15–20 minutes, or until the casserole is bubbly and heated through.
  11. Let the casserole sit for 5 minutes before serving.

Notes

Note on the casserole dish – I have dishes that go from the stove to the oven and that is the best way to handle this casserole. However, if you do not have that, simply use a pan for the first part of the recipe and transfer to a prepared casserole dish before baking.
You can find french style green beans in the frozen section of the store- just leave the bag in the fridge for a few hours to defrost naturally and drain any excess water.
In my store they sell 3.5 oz bags of French Fried Onions – I usually grab two and pour one in the mix and one for the topping.