Cook the Ground Beef: Start by fully cooking the ground beef in a large pot over medium heat until browned. Drain any excess oil after cooking.
Sauté Onions and Garlic: Add cajun seasoning, diced onion, and minced garlic to the cooked ground beef, stirring well for about five minutes until the onions are soft and translucent.
Incorporate Flavorings: Stir in red pepper flakes, Worcestershire sauce, and tomato paste into the mixture, ensuring everything is combined thoroughly.
Add Pasta and Broth: Add Rotini pasta and beef broth into the pot, stirring to combine all ingredients evenly before covering with a lid.
Cook Until Tender: Allow the pot to cook covered for approximately 15-18 minutes until the pasta has softened. Stir occasionally to prevent sticking.
Create Creamy Sauce: Once the pasta is cooked, remove the lid and stir in heavy whipping cream and shredded cheddar cheese until melted and creamy. Season with salt and pepper before serving hot.