Place green beans and chicken broth in a medium saucepan. Add just enough water to cover the green beans. Bring to a boil and simmer 10-12 minutes. Drain.
Preheat oven to 350 degrees and lightly grease a 1 ½ quart baking dish.
Melt butter in a large skillet. Add mushrooms and cook until golden brown, stirring occasionally.
In a large bowl, mix together mushrooms, green beans, condensed mushroom soup, milk, cheddar cheese, ½ cup of french-fried onions, soy sauce and pepper.
Transfer mixture to prepared baking dish. Top with remaining onions.
Bake for 25 - 30 minutes at 350° or until bubbly and golden brown.