Preheat oven to 350F. Spray a 9x13 with nonstick spray.
Layer the pan with thinly sliced onions. Top with potatoes.
Layer on the ground beef (uncooked). Sprinkle with rice.
Top with sliced celery and carrots.
Sprinkle on the drained and rinsed beans.
In a separate bowl, mix the soup with the can of water.
Pour over the layers in the casserole dish.
Cover with foil and bake 1 ½ hours. Remove from the oven.
Gently uncover and serve.