Begin by bringing a large pot of salted water to a boil. Cook the pasta according to package instructions until al dente. Reserve some pasta water, then drain and set aside.

In a large skillet, heat 2 tablespoons of olive oil over medium heat. Add the chopped onion and bell pepper. Sauté for about 4-5 minutes, or until they become tender.

Push the veggies to the side of the skillet and add the ground beef. Cook until browned, about 5-7 minutes, breaking it apart with a spatula.

Stir in the minced garlic and Cajun seasoning. Cook for an additional minute until fragrant.

Stir in the diced tomatoes and heavy cream. Bring to a simmer, allowing the sauce to thicken, about 3-5 minutes. Season with salt and pepper to your taste.

Add the drained pasta to the sauce, tossing to coat the noodles evenly. If the sauce is too thick, add a splash of reserved pasta water to achieve your desired consistency.

Serve hot, topped with freshly grated Parmesan cheese!