Ingredients

• ½ (16 ounce) package uncooked rotini pasta
• 2 tablespoons butter
• ¼ cup red onion, finely chopped
• 4 ears fresh sweet corn, kernels cut from the cob
• 2 limes, zested and juiced
• 1 pinch cayenne pepper, or to taste
• salt and ground black pepper to taste
• ¼ cup shredded Cheddar cheese, or as needed