Delish Lime and Corn Pasta Salad

Ingredients (9)

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