Cook pasta in a large pot of salted boiling water according to package instructions. Reserve about ½ cup of pasta water before draining.

In a large skillet, heat 1 tablespoon of olive oil over medium-high heat. Add the steak pieces and sprinkle with salt and pepper. Cook until browned, about 4-5 minutes. Remove and set aside.

In the same skillet, add another tablespoon of olive oil if needed. Toss in the minced garlic and Cajun spice, allowing the aroma to fill the air before adding the shrimp. Cook until the shrimp turn pink and opaque, about 3-4 minutes.

Add the cooked pasta directly into the skillet with the shrimp, followed by the steak. Pour in the Alfredo sauce, stirring to coat everything. If it appears too thick, add a splash or two of reserved pasta water.

Stir in the grated Parmesan cheese and serve topped with extra Parmesan and fresh parsley.