01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper or foil.
02 - In a small bowl, mix together the melted butter, Cajun seasoning, smoked paprika, garlic powder, onion powder, cayenne pepper, salt, and black pepper to make the Cajun butter.
03 - Brush each ear of corn generously with the Cajun butter, reserving some for after roasting.
04 - Place the corn on the prepared baking sheet and roast for 20–25 minutes, turning once halfway, until the kernels are golden and slightly charred.
05 - Remove from the oven and brush with the remaining Cajun butter. Sprinkle with chopped parsley and serve with lime wedges on the side.