Leek And Spring Onion Gratin Recipes

LEEK AND SPRING ONION GRATIN

Steps:

• Place a rack in the top third of oven and heat to 400 degrees. In a medium bowl, toss scallions, green garlic, salt and pepper.
• Heat a 12-inch cast-iron skillet over medium heat. Arrange the leeks cut-side down in the skillet, then scatter spring onions in the gaps. Sprinkle a little more salt on top, then spread scallion mixture in an even layer in pan. Pour in 1/4 cup water and top with butter.
• Cover and and simmer on low heat until vegetables are soft, 20 to 25 minutes.
• Uncover the pan, turn heat to medium-high and cook until liquid is evaporated and edges are starting to brown and sizzle, 5 to 10 minutes longer.
• Meanwhile, in a small bowl, rub together anchovies, Parmesan, panko, thyme, lemon zest and red pepper flakes. Drizzle in oil and toss to combine.
• Sprinkle Gruyère evenly into skillet over leeks, pour in cream, then top with the bread crumb mixture. Drizzle with a little more oil. Transfer to oven and bake until golden and bubbly, 15 to 20 minutes. Cool slightly, then serve warm.

SPRING GREENS AND LEEK GRATIN

Steps:

• Preheat oven to 350°F. Melt butter in an ovenproof 10" skillet (such as cast iron) over medium-low heat. Add leeks and ramp bulbs and cook, stirring often, until leeks are softened, about 10 minutes. (Try to keep the leeks from browning.)
• Add ramp greens, arugula, and spinach in big handfuls, cooking and wilting one batch before adding the next. (At first it will look like all those greens will never fit in the skillet, but keep at it-you'll see!) When all greens are wilted (this may take 15-20 minutes), add coriander, salt, and cayenne. Cook, stirring, until spices are incorporated, about 1 minute. Add lemon zest, cream, and 1/2 cup Parmesan. Continue to cook, stirring, until cream has slightly reduced, about 2 minutes longer. Remove from heat.
• Toss bread with oil in a large bowl to coat. Arrange bread on top of vegetables, taking care not to cover the greens completely (you want them to peek through here and there). Sprinkle remaining 2 Tbsp. Parmesan over.
• Transfer to oven and bake gratin until bread is golden brown and crisp, cheese is melted, and cream is bubbling, 35-45 minutes. Let cool slightly before serving.

SPRING LEEK AND MUSHROOM GRATIN

Steps:

• Preheat oven to 375°F. Bring a large pot of water to a boil and fill a bowl with ice water. Add leeks to boiling water and cook for 3 minutes. Shock the leeks by transferring to the ice-water bath. Drain and slice leeks in half lengthwise.
• Heat oil in an oven-safe cast-iron skillet or cocotte over medium heat. Add mushrooms and cook 3 to 5 minutes, stirring occasionally, until golden and slightly tender. Season with 1/4 tsp. salt and transfer mushrooms to a bowl.
• Add butter and garlic to pan; cook 1 minute. Sprinkle in flour and whisk continuously for 30 seconds. Gradually stream in milk, whisking constantly, until combined. Increase heat to bring mixture to a simmer; cook 2 to 3 minutes, until slightly thickened. Add mushrooms back to skillet, along with thyme, remaining 3/4 tsp. salt, black pepper, and 1 tsp. lemon juice. Lay sliced leeks across the top of gratin, gently pressing to slightly submerge in milk mixture. Sprinkle breadcrumbs and Parmesan cheese overtop. Transfer to oven and bake for 35 to 40 minutes, until golden and bubbly.
• Squeeze remaining 1 tsp. lemon juice overtop and garnish with additional fresh thyme before serving.

SCALLOPED ONIONS, LEEKS, AND SHALLOTS

Steps:

• In a heavy kettle cook the onions, the leeks, and the shallots in the butter with salt and pepper to taste, covered, over moderate heat, stirring occasionally, for 10 minutes, reduce the heat to moderately low, and cook the vegetables, stirring occasionally, for 10 to 20 minutes more, or until they are soft. Remove the lid and cook the mixture over moderate heat, stirring, for 3 to 5 minutes more, or until the excess liquid is evaporated. The onion mixture may be made 2 days in advance and kept covered and chilled.
• Preheat the oven to 375°F. Transfer the onion mixture to a 2-quart shallow baking dish and stir in the cream. In a small bowl toss together the bread crumbs and the Cheddar, sprinkle the mixture evenly onto the onion mixture, and dust it with the paprika. Bake the onion mixture in the middle of the oven for 20 to 30 minutes, or until the cheese is melted and the mixture is bubbly.