Ingredients:
1 1/2 cupspearled barley, rinsed
1 1/2 cupscooked white beans, such as cannellini or navy (from one 15.5-ounce can, drained and rinsed, or a heaping ½ cup dried)
Kosher salt and freshly ground black pepper
3 large garlic cloves
1 pound(1 bunch) broccoli rabe, cut crosswise into thirds
1/4 cupextra-virgin olive oil, plus more for serving
2 teaspoonsground coriander
1 small red onion, halved lengthwise and thinly sliced through the root end
1 large lemon or lime
Toasted sesame or sunflower seeds, for serving (optional)
Red pepper or mild chile flakes, for serving (optional)
Directions:
Place the barley and the beans in a medium saucepan with 6 cups of water. Season with a big pinch of salt and pepper, then bring the mixture to a boil over high heat. Stir, reduce the heat to medium-low, and cover the pot. Continue cooking, stirring every 15 minutes or so, using a wooden spoon or spatula to break up the beans a bit, until the grains are tender and the mixture is thick and creamy (think: the texture of risotto), about 40 minutes. If at any point the mixture looks dry or is starting to stick to the pot, add another ¼ cup of water and continue cooking until it reaches the right texture; if it looks more soupy than porridgy after 40 minutes, remove the lid and continue cooking until a bit more liquid reduces. Remove from the heat and use a Microplane to grate in 1 garlic clove, then season with more salt and pepper to taste.
While the porridge cooks, heat the oven to 400°F. Scatter the broccoli rabe on a sheet pan. Use a Microplane to grate over the remaining garlic cloves, then drizzle with the olive oil. Sprinkle with the coriander and season with salt and pepper. Toss, massaging the garlic into the greens. Roast until the broccoli rabe is tender and starting to char in some spots, about 15 minutes.
While the broccoli rabe roasts, place the onion in a small bowl with a big pinch of salt. Zest the lemon or lime onto a cutting board and set aside. Halve the lemon or lime and squeeze the juice into the bowl with the onion. Use your fingers to massage the mixture together, then set aside to soak for at least 5 minutes.
When you’re ready to eat, stir the lemon or lime zest into the porridge. Ladle the porridge into four bowls, then top each with some broccoli rabe, onions, and a splash of their tangy liquid. Season with more black pepper, drizzle with olive oil, then sprinkle with sesame or sunflower seeds and chile flakes, if using.