Preheat your oven to 350°F (175°C).
In a large mixing bowl, combine crab meat, cream of celery soup, sour cream, and sharp cheddar cheese.
Add breadcrumbs, green onions, soy sauce, garlic powder, black pepper, and lemon juice to the mixture.
Transfer the mixture into a greased 9x13 inch baking dish.
Sprinkle additional breadcrumbs and cheese on top of the mixture for a crispy topping.
Bake in the preheated oven for 25-30 minutes until bubbly and golden brown on top.
Let the casserole cool for a few minutes before serving.
Serve warm and enjoy your delightful crab casserole!