Note: You can use pre-cooked shrimp if you desire. Just toss the shrimp with the Cajun seasoning and do not cook.
Preheat oven to 375 F.
Cut the peppers in half lengthwise. Remove any stems or seeds.
If using cooked shrimp, toss the shrimp with the Cajun seasoning in a large bowl.
If using raw shrimp, heat the oil over medium-high heat in a skillet. Add the shrimp, sprinkle with the seasoning, and cook, turning, until done, about 5 minutes. Remove from heat.
Add the cheeses, basil and hot sauce to the shrimp Stir.
Transfer shrimp mixture to the poblanos and place on a baking dish.
Place in oven and bake 30 minutes or until the cheese is melted and the peppers are softened.
Serve garnished with chopped cilantro.