How to Cook Delicious Green Bean Casserole (from scratch)

Green Bean Casserole (from scratch).

You can Have Green Bean Casserole (from scratch) using 14 ingredients and 14 steps. Here is how you cook it.

Ingredients of Green Bean Casserole (from scratch)

1. Lets Go Prepare 450 g (1 lb.) of Green beans.
2. Lets Go Prepare 250 g (1/2 lb.) of mushrooms.
3. It's of White mushroom sauce (béchamel):.
4. It's 2 Tbsp (30 g) of butter.
5. What You needis 2 Tbsp of flour.
6. It's 120 ml (1/2 cup) of whole milk.
7. It's 120 ml (1/2 cup) of water from blanching beans, vegetable broth or more milk.
8. Lets Go Prepare 2 pinches of ground nutmeg.
9. Lets Go Prepare 1 pinch of cayenne pepper.
10. Lets Go Prepare of Topping:.
11. Lets Go Prepare 1/2 of onion, sliced thinly.
12. Lets Go Prepare pinch of salt.
13. Lets Go Prepare 1/2 Tbsp of flour.
14. Lets Go Prepare 1/2 cup of Breadcrumbs for tossing onions.

Green Bean Casserole (from scratch) step by step

1. Wash and cut of any stems of the green beans. Bring a pot of water to a boil, add a good amount of salt and blanch the green beans for 2-3 minutes. Drain and immediately cool in ice water or running cold water..
2. Chop up the mushrooms into small pieces.
3. Prepare the sauce: Melt butter in a heavy pot or frying pan. Add the mushrooms and cook for 5 minutes until they are soft and juices are starting to come out..
4. Stir in the flour. Cook for 3 min. on medium heat..
5. GRADUALLY add in the milk and whisk constantly to keep clumps out..
6. Bring the milk to a boil slowly, make sure you stir constantly. Cook on very low heat at a bare simmer for 15-20 minutes or until thicker..
7. Season with some salt to taste, a dash of ground nutmeg and optional cayenne..
8. Make the fried onions: Heat 1 tbsp vegetable oil or butter in a frying pan. Fry onions on medium low until browned stirring often - it will take several minutes..
9. Toward the end when the onions have started to brown, sprinkle with a little flour to help crisp them up. Fry for another couple minutes until crisp..
10. Toss onions with 1/2 cup breadcrumbs.
11. Preheat oven to 375°F/190°C. Arrange green beans in a baking dish big enough to hold them compactly. Pour over the sauce and spread out evenly..
12. Bake for 20 minutes covered lightly with aluminum, or until bubbly and hot. (the baking time may vary depending on how deep your dish is - adjust by adding more time or baking less as needed)..
13. Remove from oven. Sprinkle the onion breadcrumb topping on top and bake another 5-15 minutes until breadcrumbs are browned..
14. Serve and enjoy!.