Preheat the oven to 350°F (175°C).
Trim and blanch the fresh green beans in boiling water for 5 minutes, then drain.
In a mixing bowl, combine cream of mushroom soup, milk, soy sauce, and black pepper until smooth.
Add the blanched green beans to the creamy mixture and stir to coat evenly.
Pour the mixture into a shallow oval casserole dish.
Bake uncovered for 25 minutes until bubbly.
Sprinkle French fried onions evenly over the top and bake for an additional 5 minutes until the topping is golden and crispy.
Remove from oven and let it rest for a few minutes before serving.