Add the meat, celery, and onion to a large skillet set over medium high heat. Cook them, crumbling the meat as you do, until the meat's cooked & browned through out- about 8-10 minutes.
2 - 2 1/2 lb lean ground beef, 1 1/4 cups chopped celery, 1/2 cup diced yellow onion
Remove the skillet from heat, and strain off any excess grease.
Add the cream of soups and seasoning to the skillet, and stir until evenly combined. Pour in the broth, again stirring until evenly combined. Stir in the rice.
1 tsp garlic powder, salt & pepper to taste, 1 14.5 oz can condensed cream of chicken soup, 1 14.5 oz can condensed cream of celery soup, 1 quart chicken broth, 2 cups long grain white rice
Lightly spray a 9x13" baking dish with nonstick cooking spray.
Transfer the rice mixture to the prepared casserole dish, and spread it out evenly.
Cover the dish tightly with aluminum foil, and bake at 350° for an hour and 15 minutes.
Remove the dish from the oven, and let it rest for 5 minutes.
Use a sturdy spoon to stir things around to gently 'fluff' the rice. Then scoop onto plates or into bowls and serve.