Start by dicing the onion and mincing the garlic.

In a large skillet over medium heat, add the ground beef. Break it apart with your spatula, cooking until it starts to brown, about 5 minutes.

Once the beef is browned, add the diced onion and minced garlic.

Sprinkle in the salt, black pepper, and chili powder if using.

Add the beef broth or water to the skillet, scraping up any brown bits from the bottom.

Add the diced tomatoes to the mixture, stirring to combine.

Reduce the heat to low and let simmer for about 10 minutes.

Once the mixture is thickened to your liking, serve it hot.