To prepare a tortilla crusted snapper with cilantro lime s mexican recipe, first you will need to prepare the ingredients for the recipe. First, you'll need the following ingredients: 2 tbsp. kosher salt, 1/4 c. ground cumin, 1/2 lb. fresh cilantro, 1 cup shredded romaine lettuce, and 2 tablespoons melted butter. You will also need: 1 pound halibut fillets, cut in half lengthwise, skin side down. Toss with 1 tablespoon olive oil. Season with salt and pepper to taste. Heat the oil over medium-high heat. Add the sliced snapper and cook, turning occasionally, until browned on all sides, about 5 minutes. Remove from the heat and set aside.