Preheat the oven to 350 degrees F (175 degrees C).
Combine green beans, corn, soup, Cheddar cheese, sour cream, celery, and onion in a bowl. Mix thoroughly. Pour vegetable mixture into a 8-inch square baking dish and spread evenly.
Combine crackers and melted butter in a small bowl. Mix well, coating crackers with the butter. Pour over the vegetable mixture in the baking dish and spread evenly without stirring. Sprinkle almonds on top.
Bake in the preheated oven until set, about 30 minutes.