
1. In a skillet over medium heat, melt the butter. 2. Add the onion and sauté for about 2 minutes. 3. Add the asparagus and sauté for 3 minutes. 4. Add the shrimp and cook for 4 minutes. 5. Season with salt, pepper, and cajun seasoning. 6. Pour in the diced tomatoes and half-and-half and simmer over low heat for 5 minutes. 7. Remove from the heat and pour over the pasta. Toss to coat the pasta thoroughly, sprinkle with Parmesan cheese, and serve immediately.