You can use your favorite sausage in this recipe. Several good spicy Cajun sausages are available at most markets. Some types of sausage contain enough fat that you will not need the 1 tablespoon of vegetable oil in step 1. It depends on what type sausage you use. Regular spicy breakfast sausage will not need any added oil. Other types of sausage may.
Some types of sausage have a casing that must be removed (skinned) before cooking. The package cooking instructions will tell you if you need to remove the casing.
For a change of pace you can substitute seafood (shrimp, crawfish, etc) for the sausage and keep everything else the same to make a totally different dish.