01 -
Preheat the oven to 190°C.
02 -
Briefly cook the green beans in boiling water until tender-crisp, then drain thoroughly.
03 -
In a large skillet, melt butter over medium heat and sauté the chopped onion and minced garlic until translucent and fragrant.
04 -
Add cream of mushroom soup, milk, soy sauce, salt, and black pepper to the skillet; stir well to incorporate.
05 -
Fold the blanched green beans into the soup mixture, ensuring even coating.
06 -
Transfer the mixture to a casserole dish and evenly spread the crispy fried onions over the top.
07 -
Bake in the preheated oven for approximately 25 minutes, or until the topping is golden brown and the casserole is bubbly.