Step 1: Cook the Beef
In a large pot or Dutch oven, cook the ground beef, onion, and garlic over medium heat until the beef is browned and the onion is softened, about 5-7 minutes. Drain any excess fat.
Step 2: Add the Seasonings and Liquids
Stir in the taco seasoning, diced tomatoes, tomato sauce, and broth. Bring to a boil.
Step 3: Cook the Pasta
Add the pasta and reduce the heat to medium-low. Simmer for 10-12 minutes, or until the pasta is tender and the sauce has thickened.
Step 4: Add the Cheese
Stir in the shredded cheddar cheese until melted and combined.
Step 5: Garnish & Serve
Garnish with fresh cilantro and serve hot with sour cream and diced avocado on the side.