Use 100% pumpkin purée, not pumpkin pie filling. The filling is loaded with corn syrup and dessert spices, and it will scorch and taste wrong in a savory pot.
You should not taste pumpkin as a distinct flavor. If you do, you have used too much. It is there for body and texture.
Serve with shredded cheddar, sour cream, chopped green onions, fresh cilantro, diced avocado, and roasted pumpkin seeds at the table. Cornbread or tortilla chips on the side.
Like most chili, this is better the next day. Refrigerate up to 4 days or freeze up to 3 months.
Ground turkey works in place of beef. Reduce the simmer by about 5 minutes since it dries out faster.
For a vegetarian pot, skip the beef and add a third can of beans. Use vegetable broth.