Add the pumpkin spice, chili powder, salt, paprika, cumin, oregano, turmeric, and black pepper to a small bowl. Stir to combine and set aside.
Heat 1 tablespoon of the olive oil in a large Dutch oven or stockpot over medium heat. Add the ground beef and turkey and cook, breaking the meat apart as you go, until completely browned. Drain if needed, then transfer the meat to a plate and set aside.
Add the remaining tablespoon of olive oil to the same pot. Add the onion and bell peppers and cook for about 5 minutes, stirring frequently.
Add the mushrooms and cook for another 5 minutes, or until softened.
Stir in the minced garlic and cook for about 1 minute, just until fragrant.
Return the browned beef and turkey to the pot. Sprinkle in the spice mixture and stir well to coat everything. Cook for a few minutes, stirring occasionally.
Add the diced tomatoes with their juices, pumpkin purée, bay leaves, and beef broth. Stir well until everything is thoroughly combined.
Bring the chili to a boil, then reduce the heat to low and simmer for at least 30 minutes and up to 1 hour, stirring occasionally.
Remove and discard the bay leaves. Taste and adjust the seasoning if needed, then ladle into bowls and pile on your favourite toppings. Serve hot and dig in!
Notes
Use pure pumpkin purée, not pumpkin pie filling. The latter is sweetened and will completely change the flavour of your chili.Drain excess grease after browning the meat, if needed. You want all that beefy flavour without an oily chili.Don't drain the diced tomatoes. Add the juices to the pot too. They're part of the liquid that creates the chili base.Keep an eye on the consistency. Pumpkin thickens the chili as it cooks, so stir in a splash of beef broth if it gets thicker than you like.Store leftovers in the fridge for up to 4 days or freeze in an airtight, freezer safe container for up to 3 months.Nutrition information does not include optional toppings.