Begin by dicing the onion and green bell peppers. Place them into a large, sturdy pot.
Gently sauté the chopped vegetables over medium-high heat until the onion becomes tender and translucent.
Next, add the ground beef and pork sausage to the pot, breaking up the meat as it cooks until it's lightly browned. For a healthier option, drain any excess fat.
Carefully use an immersion blender to lightly break up the stewed tomatoes in their can, aiming for a chunky texture rather than a smooth sauce.
Stir in the roughly blended tomatoes, tomato paste, beef broth, chili powder, cumin, garlic powder, optional sweetener, hot sauce, salt, and pepper into the pot with the cooked meat and vegetables.
Bring the mixture to a gentle "extreme" simmer (between a simmer and a low boil) and let it cook for 2 hours, stirring frequently to prevent sticking and ensure even flavor development.
Serve your delicious keto chili warm, optionally garnished with a sprinkle of shredded cheddar cheese or a dollop of sour cream, if desired.