01 -
Cook the penne pasta in a pot of salted water until al dente according to package instructions. Keep some of the pasta water for the sauce, then drain the pasta and cover to keep warm.
02 -
Coat the shrimp with 1 Tbsp of the cajun seasoning. In a deep skillet, heat 1 Tbsp oil over medium heat. Once hot, add the seasoned shrimp in a single layer and saute for about 1-2 minutes per side, or until the shrimp is no longer translucent. Remove from skillet and cover to keep warm.
03 -
In the same skillet, melt 2 Tbsp butter with the minced garlic and cook for 30 seconds until fragrant. Add in the diced tomatoes and saute for about 2-3 minutes.
04 -
Pour in the heavy whipping cream, remaining 1 Tbsp cajun seasoning, and grated parmesan cheese. Bring to a simmer, then reduce to medium/low heat and continue cooking for 2-3 minutes or until the sauce thickens.
05 -
Add the shrimp and pasta back into the skillet and stir until the noodles are coated in sauce and everything is heated through. If needed, add a splash of the reserved pasta water to thin the sauce. To serve, garnish with more parmesan and chopped parsley, if desired.