Place your Dutch oven or large heavy-bottomed pot over medium heat. Pour in the avocado oil and let it warm for about 1-2 minutes until it shimmers slightly. This is your signal that the pan is ready—oil at the proper temperature creates better browning and flavor development. Once the oil is hot, add your diced onion to the pot. You'll hear a gentle sizzle, which tells you the vegetables are starting to release their moisture. Stir occasionally and let the onions cook for 3-4 minutes until they become translucent with just a hint of golden color at the edges. This develops their natural sweetness and removes any harsh raw bite.

Add the ground bison to the pot with the softened onions. Using a wooden spoon or spatula, break the meat into small, bite-sized pieces as it cooks. This step is crucial—you want small, individual pieces rather than large clumps. Cook for 7-8 minutes, stirring frequently, until the meat loses its pink color and develops a rich brown exterior. You should see the meat release its liquid initially, then as it cooks further, that liquid will evaporate and the meat will begin to brown. This browning stage creates what we call the Maillard reaction—a chemical process that develops complex, savory flavors you simply cannot achieve without it.

Pour the entire can of roasted green chiles and diced tomatoes directly into the pot with the browned bison and onions—yes, include all the liquid. Follow this with the tomato sauce, stirring gently to combine everything. The color will shift to a beautiful russet red. Now add your chili beans with all their sauce, along with the drained and rinsed kidney beans. The reason I drain the kidney beans is to reduce excess sodium and any metallic flavor that comes from the canning liquid. Stir everything together thoroughly, ensuring nothing sticks to the bottom of the pot. You should have a thick, cohesive mixture that bubbles gently at this point.

Sprinkle the chili powder, garlic powder, cumin, onion powder, salt, and pepper over the surface of the chili. Rather than dumping all the seasonings in at once, I like to scatter them and stir well—this prevents clumping and ensures even distribution. Stir thoroughly until you don't see any dry spice streaks and everything is well combined. Take a moment to smell the pot—you should notice the spices awakening, releasing their aromatic oils. This tells you the seasoning is integrating properly with the dish.

Reduce heat to low and let the chili simmer gently. You want to see just a few lazy bubbles breaking the surface every few seconds—not a rolling boil, which can cause the beans to break down too much. Cover the pot partially with a lid, leaving it slightly ajar to allow some steam to escape. Let it cook for at least 15-20 minutes for a quick weeknight version, though I genuinely recommend 30-45 minutes to a few hours on low heat if your schedule allows. The longer it simmers, the more the spices meld and develop. Stir occasionally and taste as you go, adjusting salt and pepper to your preference in the final minutes. Just before serving, stir in the fresh lime juice if using—it adds a bright, finishing note that elevates the entire dish without making it taste obviously citrusy.