Wendy's Restaurant Chili

Why I Love This Recipe
The best recipe I have ever found for what they serve at the restaurant. I put it in the crockpot instead of on the stove on low for about 10 hours.
Ingredients You'll Need
2 lb ground beef
1 (29 oz) can tomato sauce
1 (29 oz) can kidney beans (with liquid)
1 (29 oz) can pinto beans (with liquid)
1 cup diced onion (1 medium onion)
1 small can chilis (or 2 fresh chopped ones)
1/4 cup diced celery (1 stalk)
3 medium tomatoes, chopped
2 tspn cumin powder
3 tbsp chili powder
1-1/2 tspn black pepper
2 tspn salt
2 cups water
Directions
Brown the ground beef in a skillet over medium heat; drain off the fat.
Using a fork, crumble the cooked beef into pea-size pieces.
In a large pot, combine the beef plus all the remaining ingredients, and bring to a simmer over low heat.
Cook, stirring every 15 minutes, for 2 to 3 hours.