Heat a large heavy-bottomed pot over medium heat and add a splash of olive oil. Once shimmering, add diced onion and cook until translucent and fragrant, about 5 minutes, stirring occasionally.
Add minced garlic to the pot and cook for another minute until fragrant, making sure it doesn’t burn.
Crack in the ground turkey and break it apart with your spoon. Cook until it turns golden brown and no pink remains, about 7-8 minutes, stirring often.
Sprinkle in chili powder, cumin, and cinnamon. Stir well to coat the meat and vegetables evenly, allowing the spices to toast slightly for about 1-2 minutes.
Pour in the tomato sauce and add the rinsed kidney beans. Stir everything together, ensuring the beans are evenly distributed.
Bring the chili to a gentle simmer, then reduce the heat to low. Let it simmer uncovered for about 30 minutes, stirring occasionally, until thickened and fragrant.
Taste the chili and adjust seasoning if needed—add more chili powder for heat or salt to enhance flavor. Let it rest for 10 minutes to deepen the flavors.
Serve hot, garnished with your favorite toppings like shredded cheese, sour cream, or chopped herbs, if desired. Enjoy the hearty, flavorful chili!