Can I make this less spicy?
Yep. Use a mild smoked sausage and start with 1 teaspoon Cajun seasoning. You can always add more at the end, which is a much happier situation than trying to un-spice a whole skillet.
What pasta shapes work best for one-pan pasta?
Short shapes like penne, rotini, and shells are easiest because they cook evenly while staying saucy. If you use a different shape, watch the liquid level and cook time.
Why is my sauce too thick?
Pasta keeps absorbing liquid as it sits. Add a splash of broth, water, or milk and stir over low heat until it turns creamy again.
Why is my sauce too thin?
Totally fixable. Wide pans reduce faster, deep pans stay soupier, and lids that seal tightly can trap more liquid. First, simmer uncovered for 2 to 4 minutes to reduce. If it still looks loose, stir in a little extra Parmesan. Just do not crank the heat, and once the cream is in, do not let it boil.
Can I add veggies?
Absolutely. Quick-cooking options: spinach (stir in at the end), frozen peas (last 2 minutes), or zucchini (with the peppers). If you add mushrooms, brown them after the sausage for extra flavor.
Do I need to salt the dish?
Maybe, maybe not. Cajun seasoning blends vary a lot in salt, and sausage brings its own party. Taste the finished pasta first, then add salt only if it needs it.