Start by heating a large pot over medium heat. Add the ground beef and cook until it's browned, breaking it apart with a spoon as it cooks. This step usually takes about 5-7 minutes. Once the beef is nicely browned, drain any excess fat if necessary.

Next, add the chopped onion to the pot with the ground beef. Cook for about 5 minutes, or until the onion becomes soft and translucent. This adds a lovely depth of flavor to your chili.

Stir in the chili seasoning, salt, and pepper. Let the spices toast for a minute or two, allowing them to release their full aroma and flavor. This step is crucial for building the rich and complex taste of the chili.

Pour in the can of diced tomatoes, including the juice, and the drained kidney beans. Stir everything together until well combined. The tomatoes add a nice acidity, while the beans provide a hearty texture and protein boost.

Reduce the heat to low and let the chili simmer for about 20-30 minutes. This allows all the flavors to meld together beautifully. Be sure to give it a stir occasionally to prevent sticking.

Taste your chili and adjust the seasoning if needed. Serve hot with your favorite toppings like shredded cheese, sour cream, or green onions. Pair it with a slice of cornbread or some crusty bread for the ultimate comfort meal.