HOW TO COOK ON A GRILL:

1. Start by boiling your corn for about 4 minutes in a large pot of boiling water. This keeps the corn soft, moist, and tender when it's time to grill them. Remove and pat dry.
2. Preheat your grill to medium-high heat, aiming for around 400°F (200°C).
3. In a small saucepan or microwave-safe bowl, melt the butter over low heat or in short bursts in the microwave until fully melted.
4. Once the butter is melted, add the olive oil and season it with salt and black pepper to taste. You can also add additional seasoning, such as chili powder or smoked paprika, for extra flavor if desired.
5. Dip a basting brush into the melted butter and generously brush each ear of corn, ensuring they are evenly coated on all sides.
6. Carefully place the buttered corn directly onto the grill grates. Close the lid and let the corn cook for about 3 minutes, then turn the cobs using tongs.
7. Brush the corn with more melted butter mixture, then continue grilling for another 3 minutes. Repeat the process of basting and turning the corn every few minutes until the kernels are tender and slightly charred in spots.
8. Keep a close eye on the corn as it cooks, adjusting the heat as needed to prevent burning.
9. Once the corn is cooked to your liking, remove it from the grill using tongs and transfer it to a serving platter, and spread on the butter mixture one last time. 

HOW TO COOK IN A CAST IRON SKILLET:

1. Start by boiling your corn in a large pot for about 4 minutes. This keeps the corn soft, moist, and tender when it's time to grill them. Remove and pat dry.
2. In a small saucepan or microwave-safe bowl, melt the butter over low heat or in short bursts in the microwave until fully melted. Add the olive oil to the butter and season with salt and black pepper to taste, and add any additional seasoning if desired.
3. Pour the seasoned melted butter into a small bowl or dish. Dip a basting brush into the melted butter and generously brush each ear of corn, ensuring they are evenly coated on all sides.
4. Heat a cast iron skillet over medium-high heat on the stovetop until hot. Place the buttered corn directly into the skillet.
5. Cook the corn in the skillet for about 3 minutes on each side, turning occasionally with tongs to ensure even cooking and charring. As you turn the corn, continue to baste it with the melted butter mixture, ensuring each side gets coated with flavor.
6. Keep a close eye on the corn as it cooks, adjusting the heat as needed to prevent burning. The corn should develop a nice charred exterior while becoming tender and flavorful on the inside.
7. Once the corn is cooked to your liking and has a beautiful charred appearance, remove it from the skillet using tongs and transfer it to a serving platter.
8. Before serving, brush the corn with any remaining melted butter mixture and sprinkle with additional salt and pepper if desired.