Try this Seasoned Broiled Potatoes recipe, or contribute your own.
Swapping melted butter for an oil with a lower smoke point will introduce burnt flavors long before the potato exterior achieves crispness. High-heat broiling requires fats that can withstand intense radiant energy while transferring heat efficiently to the surface starch. Russet potatoes possess a high starch content and low moisture profile, making them uniquely suited for this cooking method because excess water impedes browning.
Piercing the skin of two medium-sized russet potatoes with a fork allows internal steam to escape during the 6 to 8 minutes in the microwave, preventing soggy interiors. Microwaving gelatinizes the starches partially before they reach the heat source, cutting total processing time down to roughly 30 minutes. Slicing the cooked potatoes into small squares without piercing the underlying skin creates hundreds of individual thermal pockets that absorb melted butter and grated parmesan cheese. Positioning the lined baking sheet on the center oven rack keeps the food at an optimal distance from the high broiler element, preventing premature scorching while rendering the cheese golden brown.