Drain and rinse 2 cans black beans. (Do not drain third can.)
Sauté ground beef, onion, and garlic in a large Dutch oven over medium-high heat 10 minutes or until meat crumbles and is no longer pink. Stir in chili powder and next 3 ingredients; sauté 3 minutes. Stir in diced tomatoes, next 2 ingredients, drained and undrained beans, and 2 cups water. Bring to a boil over medium-high heat; reduce heat to medium-low, and simmer, stirring occasionally, 30 minutes. Serve chili with desired toppings.
The (Mini) Sandwich: Stir together 2 (6-oz.) packages buttermilk cornbread-and-muffin mix according to package directions, stirring 1/3 cup store-bought pimiento cheese into batter. Spoon batter into a lightly greased 12-cup muffin pan. Bake at 400° for 20 minutes or until done. Split warm muffins, and spread with additional pimiento cheese.