Green Bean Casserole Thanksgiving

How to make Green Beans Casserole (Thanksgiving Side Dish)baked in a White Sauce, with Mushrooms, Water Chestnuts, Onion, & Cheese. Make the day before, ready for the oven on Thanksgiving Day. Your first bite makes you want for more. All my side dishes are scrumptious, tested & tweaked. I know it sounds like a brag, but they are all delicious.
How to make Green Beans Casserole (Thanksgiving Side Dish)baked in a White Sauce, with Mushrooms, Water Chestnuts, Onion, & Cheese. Make the day before, ready for the oven on Thanksgiving Day. Your first bite makes you want for more. All my side dishes are scrumptious, tested & tweaked. I know it sounds like a brag, but they are all delicious.
Sauté: Medium Pan
2 Tbl Butter
8 oz Can Sliced Water Chestnut
1 Cup Mushrooms
Sm Onion

Sauté: Large Pan
4 Tbls Butter
1/4 Cup Flour
1 Cup Milk
1/2 cup Chicken Broth
1/2 Tsp Soy Sauce
cook till thick
Stir 16 oz French Style Beans
1/2 Cheddar Cheese
into White Sauce

Layer mushroom mix then Bean mix
Bake 350 for 45 Minutes
Remove from oven
Top with Fried French Onion
Cook additional 5 Minutes
Long version
https://youtu.be/2AmINW-HtkQ