In a large Dutch oven, brown the ground beef.
Add the garlic, celery, and onions. Saute 10 minutes. Add chili powder, cayenne, smoked paprika, oregano, and cumin and stir till they are fragrant.
Add tomatoes, tomato sauce, chile peppers, and beans.
Bring to a boil, reduce heat and simmer uncovered for 1-1½ hours, stirring occasionally. You can use a slow cooker, too, set on low for 6-8 hours. Just before serving, stir in the Dijon mustard.
Serve with Crunchy Cast-Iron Cornbread, corn chips, cheese, sour cream, crackers, green onions, and extra hot sauce.