
In a large pot, heat olive oil over medium heat. Add onion and green pepper and cook for 5–7 minutes, or until the vegetables are softened and the onion is translucent.
Add garlic and cook for 30 seconds, or until fragrant. Stir in the ground beef and cook for 5–6 minutes, breaking it up with a spatula, until browned.
Add pumpkin puree, tomato paste, and chili seasoning. Cook for 2-3 minutes, stirring constantly, until the tomato paste and pumpkin have darkened.
Stir in beans, tomatoes, and broth and bring the mixture to a boil. Reduce heat to a simmer, cover, and cook for 25 minutes, stirring occasionally. Uncover and continue to cook for 20-25 more minutes, until the chili thickens, stirring occasionally.
Serve with your favorite toppings.