Preheat oven to 400 degrees. Remove lid and label, if needed. When ingredient appears in recipe, remove from packaging. Thoroughly rinse any fresh produce and pat dry.
Mix penne, ¼ cup water, Alfredo sauce, enchilada sauce, pepper and onion mix, Cajun seasoning (use less if spice averse) , and a pinch of salt and pepper in provided tray until completely combined.
Separate steak strips and place on pasta in a single layer. Season with a pinch of pepper.
If using flank steak, ground beef, ground turkey, or diced chicken breasts, follow same instructions.