In a hot dutch oven, cook ground beef, onions, garlic, and green peppers until meat is browned. Drain any fat from meat. Place pot back on stove and stir in spices. Cook for 1 minute.
Add broth, beans, brown sugar, and tomatoes. Cover, reduce heat and simmer for 20 minutes, stirring occasionally.
Remove from heat and stir in chocolate. Serve chili over spaghetti. Top with cheese, onions, and cilantro (if desired).
The serving size indicated for nutritional information is for 4 people with about 1/2 cup spaghetti, 1-1/2 cups chili, 2 tablespoons onion, and 3 tablespoons cheese.Cilantro use is optional and used by my preference. This was not a listed ingredient in the original recipe.Nutrition information calculated using myfitnesspal is provided as a courtesy, but will vary depending on the specific brands of ingredients you use. Please consult with your doctor regarding specific health needs.