Roasted Garlic and Cauliflower Soup with Mushrooms and Caramelized Onions
Though this recipes takes some time, there’s very little actual work involved, so try to think of it less like cooking and more like minding. I give my rich vegetable broth recipe below, but please feel free to make something easier or go with the boxed stuff if you need to.For the broth (optional)4 tablespoons olive oil1 large red onion, quartered4 carrots, washed, trimmed, and cut in half6 stalks celery, trimmed and halved1 bunch kale stems1 bunch parsley stems6 cloves garlic, smashed and peeled4 teaspoons sea salt, or to taste20 peppercorns4 bay leaves4 quarts water, plus more as neededIn a big stock pot, heat the olive oil over medium-high heat. Add the onion and sear. Next, add the carrots and celery and cook for a few minutes more. Add the stems, garlic, and spices. Pour in 4 quarts water. Bring to a boil, and then turn heat to a simmer. Cook, so broth is gently bubbling, for 3 ” 5 hours. Strain, pour into jars, seal, and refrigerate.(Aimee from Simple Bites has some great tips for freezing stock and broth in glass here.)For the soup1 large head cauliflower, cored and cut into 1/2 inch thick slices1 head garlic, broken into cloves, ends trimmed and smashed, with the papery skin left on3 tablespoons olive oil2 tablespoons lemon zest2 teaspoons sea salt1 teaspoon ground black pepper1 teaspoon ground cumin1 teaspoon ground coriander4 ” 5 cups vegetable broth (see above)HOW TO MAKE IT:Preheat oven to 400 degrees F.Toss the cauliflower and garlic with the olive oil, zest, salt, and spices, and turn out onto a rimmed baking sheet. Roast for 25 minutes, or until the cauliflower is tender and the edges are lightly browned.When it’s cool enough to handle, peel the papery skin from the garlic.Using your blender of choice, puree the roasted vegetables with the broth until smooth. Check salt levels and adjust as needed. To serve, heat over medium-low heat, stirring often, for 20 minutes.For the topping1 red onion, sliced thin4 tablespoons olive oil, divided1/2 teaspoon sea salt, plus a pinch8 crimini mushrooms, stems removed and sliced 1/4 inch thickpinch of black pepper3 tablespoons parsley, mincedHeat a medium-sized skillet over medium-high heat. Add 3 tablespoons olive oil, and then the onion slices and sea salt. Cook for 5 minutes, stirring often. Turn heat to low and cook, stirring occasionally, for 2 1/2 hours. After 1 hour they’ll be sweet but limp; after 2, delicious; but after 2 1/2 hours will they be crisp and sweet and perfect. Remove to a bowl.Just before serving the soup, heat the remaining tablespoon of olive oil in the same skillet.Add the mushrooms, salt, and pepper, and cook for about 7 minutes, or until the mushrooms have given up their water and are crispy on the edges. Fold in the onions and parsley. Off the heat and set aside.Ladle the soup into bowls, add the topping, and drizzle with olive oil.