1. Sprinkle beef with desired amount of salt and pepper. Cook beef in hot oil in a large, enamel cast-iron Dutch oven over medium-high heat, stirring often, 5 to 6 minutes or until browned. Transfer beef to a platter.
2. Add onion to Dutch oven, and cook, stirring often, 3 minutes or until tender. Add garlic and next 3 ingredients; cook, stirring constantly, 2 minutes. Stir in tomato paste, and cook, stirring constantly, 2 minutes.
3. Add chiles, next 2 ingredients, beef, and 1 cup water; bring to a boil. Boil, stirring occasionally, 20 minutes. Add salt to taste. Sprinkle with cornmeal. Cook, stirring constantly, 5 minutes or until thickened. Serve with desired toppings.