In a large pot or Dutch oven over medium heat, add the extra lean ground beef. Cook until browned, breaking it apart with a wooden spoon as it cooks, about 5-7 minutes.
Once the beef is browned, add the minced garlic, onion powder, ketchup, Dijon mustard, and hot sauce (if using). Stir well and cook for another 2-3 minutes until the garlic is fragrant.
Season the mixture with salt and pepper to taste. Remember that you can adjust these later, so start with a little and add more as needed.
Pour in the pasta and beef broth. Stir everything together, ensuring the pasta is submerged in the broth.
Bring the mixture to a boil. Once boiling, reduce the heat to a simmer, cover, and cook for about 10-12 minutes, or until the pasta is tender and most of the liquid has been absorbed.
Remove the pot from the heat and stir in the sour cream until well combined. Then, gradually add the three cheeses—cheddar, mozzarella, and Monterey Jack—stirring until everything is melted and creamy.
Serve the Three Cheese Hamburger Helper warm, garnished with chopped parsley for a pop of color. Enjoy this creamy, cheesy delight straight from the pot or transfer it to individual bowls for a cozy family dinner.