Preheat the broiler and position a rack 8 inches from the heat. Set a steamer basket in a large, deep skillet filled with 1 inch of water and bring to a boil. Add the broccoli spears, cover and cook over high heat until crisp-tender, about 5 minutes. Transfer the broccoli spears to a shallow 1 1/2 quart baking dish, arrange them in a single layer and season with salt.
Meanwhile, in a medium saucepan, melt the butter. Add the flour and whisk over moderately high heat for 2 minutes. Add the half-and-half and cook, whisking constantly, until thickened and bubbling, about 5 minutes. Remove from the heat and whisk in the cheddar and chipotle.
Pour the cheese sauce over the broccoli. Broil for 5 minutes, shifting the dish once halfway through, until the gratin is bubbling and browned in spots.
You May Like
Sign Up for Our Newsletter
Keeping you in the know on all the latest & greatest food and travel news, and other special offers.