There's a smell that means summer has arrived before you've even seen a calendar: corn caramelizing over an open flame. One of our readers told us he first tried baking corn in the oven late one autumn, when there wasn't a grill in sight. He was skeptical. But the moment he opened the oven door and that smell of browned butter and sweet corn hit him, he was convinced — the oven is a completely worthy stand-in for the grill.
Cut each cob into three pieces (or two, if the cobs are short). Halve each piece lengthwise. Arrange the pieces cut-side down on a baking sheet. Brush with butter and season lightly with salt. Place the tray in the oven and switch on the broiler/grill setting. Roast for about 20 minutes, until the corn turns a deep golden brown and develops a nicely charred edge.
The basic recipe is already excellent on its own — but here's how to take it further:
This dish is naturally gluten-free, which makes it a suitable option for a wide range of eaters. Corn itself contains no gluten, the protein found in wheat and some other grains that a portion of the population has difficulty digesting.
Choosing good corn makes a real difference to the final result. Look for cobs that are a pale, even yellow — deeper yellow kernels are often a sign of older, less juicy corn. Before buying, it's worth tasting a raw kernel: if the flavor is mild and clean, you've likely picked a good one. It also helps to know that corn's natural sugars begin converting to starch once it's off the plant, especially in warmer storage conditions, which is part of why corn tends to taste sweetest in peak summer, eaten as close to harvest as possible.
Corn is more than just a tasty summer side. According to university extension nutrition data, a medium ear of sweet corn provides around 2 grams of dietary fiber along with folate and roughly 275 mg of potassium — a mineral that plays a supportive role in normal heart and muscle function as part of an overall balanced diet. Corn is also naturally low in fat and offers a modest amount of plant protein per serving.
Corn is also one of the relatively few everyday foods that contains meaningful amounts of the plant pigments lutein and zeaxanthin. A review published in the journal Nutrients describes lutein and zeaxanthin as carotenoids that accumulate in the retina and have been studied for a supportive role in long-term eye health, and research published in the Journal of Food Science has specifically measured these carotenoids across different corn products, confirming corn as a consistent dietary source. As always, these findings describe an area of ongoing nutrition research rather than a guarantee of any individual health outcome, and corn is best thought of as one useful piece of an overall varied diet.
Oven-roasted corn pairs beautifully as a side dish alongside other roasted vegetables. If you enjoy the technique, it's worth trying it with other produce too — roasting rather than boiling vegetables such as Brussels sprouts is a method we've covered separately, since roasting tends to preserve more of a vegetable's natural texture and flavor compared to boiling. Together, a tray of roasted seasonal vegetables and a plate of caramelized corn make for an easy, crowd-pleasing summer spread.
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