In a large skillet, cook the ground beef, onion, and garlic over medium-high heat for 15 minutes.

After 15 minutes, when the beef is browned, add the chili powder, salt, and tomato sauce. Mix well and cook for another 10 minutes over medium heat.

While the beef finishes cooking, preheat the oven to 250°F to warm the taco shells for 4 minutes.

Meanwhile, chop the tomatoes and slice the lettuce.

Once everything is ready, assemble the tacos by layering the cooked beef, cheese, lettuce, and tomatoes in the shells. Top with your favorite hot sauce and a dollop of sour cream. Enjoy!