Coat potatoes with oil and Cajun seasoning. Roast at 375 until soft. Squeeze lime juice over them.
Sauté garlic in butter until softened. Add seasoning to taste and cook momentarily. Add rice and a splash of water. Cook until fragrant and hot. Remove from heat and add lime zest and juice.
Assemble wraps with a scoop of rice, beans, and then potatoes.