Dice the onion into small, even pieces and mince the garlic cloves. This helps them cook quickly and release their aromatic oils.
Heat a skillet over medium heat, add a splash of oil, and sauté the chopped onion until it becomes translucent and fragrant, about 3-4 minutes. The onions should look soft and slightly golden.
Add the minced garlic to the skillet and cook for another 30 seconds, stirring constantly until it becomes fragrant but doesn’t burn. This quick step develops depth of flavor.
Transfer the cooked onion and garlic mixture into the slow cooker and add the ground meat. Break up the meat with the back of a wooden spoon as it cooks until browned and no longer pink, about 5-7 minutes. This creates a savory base for the chili.
Add the canned pumpkin puree, diced tomatoes, drained black beans, and vegetable broth into the slow cooker. Stir everything together to combine evenly, creating a vibrant, orange-colored mixture.
Sprinkle in the chili powder, smoked paprika, cinnamon, and a pinch of salt and pepper. Stir to evenly distribute the spices, releasing warm, fragrant aromas that fill the air.
Cover the slow cooker with its lid and cook on low for 4 hours, stirring once or twice during cooking. The chili should thicken and the flavors will meld beautifully, the pumpkin adding richness and sweetness.
Once cooked, taste and adjust seasoning with additional salt and pepper if needed. The chili should be thick, hearty, and inviting with a vibrant orange hue.
Serve the pumpkin chili hot, garnished with fresh herbs like cilantro or a dollop of sour cream if desired. Enjoy the comforting aroma and satisfying texture of this seasonal dish.