Mushroom Parmentier Recipes

MUSHROOM PARMENTIER

Steps:

• Heat the oven to 425°F/220°C.
• Clean and quarter the mushrooms. (Dice if using portabello).
• Heat 2 of the tablespoons of the butter with one tablespoon of the olive oil and sauté the mushrooms until golden. Remove from pan.
• Heat the other spoonful of olive oil (more if needed) and sauté the onion until soft. Add the garlic for one minute.
• Deglaze with the wine and reduce to about a tablespoon.
• Add the stock, thyme leaves and the mushrooms, season with salt and pepper, cook until the stock has reduced by half.
• Combine the flour with the last tablespoon of butter in a small dish and the stir it into the sauce. Cook until the liquid has thickened to a sauce, a matter of minutes. Stir in the parsley. Spoon the mixture into a gratin dish.
• Potato Topping: Steam the potatoes in a covered saucepan with about an inch of water in the bottom, until very tender. Keep and eye on them or you will start to brown the bottom. This way of steaming the potatoes gives them a nice texture and flavour.
• Mash the potatoes with the butter and milk until very smooth, adding more milk if needed.
• Season with salt and pepper. Stir in the Gruyere cheese.
• Spread over the mushroom mixture, smooth with the back of a spoon.
• Sprinkle over the Parmesan.
• Bake until golden on top, about 15 minutes.

HACHE PARMENTIER

Steps:

• Preheat the oven with 350 degrees F.
• Combine the meat, gravy, and vegetables in a large saute pan and cook over medium heat just until everything is heated through. Season with salt and pepper.
• Pour the heated mixture into a large glass pie plate or a round glass baking dish. Add the horseradish to the heated potatoes. Spread the mashed potatoes over the meat mixture, smoothing with a spatula and spreading to the edges of the pie dish.
• Sprinkle the top with the bread crumbs and the Parmesan. Dot the top with butter. Bake for 45 minutes on the top shelf of the oven. Raise the oven temperature to broil and broil just until the crumbs are browned, about 1 minute. Serve.

MUSHROOM PARMENTIER

Steps:

• For the potatoes: Steam the potatoes in a covered saucepan with about 1 inch/2.5 cm water in the bottom, until very tender, about 30 minutes.
• For the mushrooms: Clean and quarter the mushrooms. Heat just 2 tablespoons of the butter with 1 tablespoon of the olive oil and saute the mushrooms until cooked and golden. Remove from the pan. Heat the other spoonful of olive oil (adding more if you need it) and saute the onion until soft. Add the garlic for 1 minute. Deglaze with the wine and reduce to no more than a spoonful. Add the stock, thyme and mushrooms, season with salt and pepper and cook until the stock has reduced by half. Knead together the flour with the last tablespoon of butter and stir it in. Cook until the liquid has thickened to a sauce, a matter of minutes. Stir in the parsley. Spoon the mixture into a gratin dish.
• For the cheese potato top: Heat the oven to 425 degrees F/220 degrees C. Mash the potatoes with the milk and butter until smooth, adding more milk if needed. Season with salt and pepper. Stir in the diced cheese. Distribute evenly over the mushroom mixture, and smooth with the back of the spoon (if you want to be very retro-housewife, make patterns with the tines of a fork or make waves with a spoon). Sprinkle over the Parmesan. Bake the gratin until bubbling hot and golden on top, about 15 minutes.

SAVORY MUSHROOM AND PARMESAN PALMIERS

Steps:

• Heat oil in a large, deep skillet. Add mushrooms, shallots, and garlic and cook over medium-high, stirring frequently, until just beginning to brown, about 15 minutes. Tie bay leaves, rosemary, thyme, and tarragon together in a bundle with kitchen string and add to skillet. Add wine, Marsala, and 1/4 cup plus 2 Tbsp. water and cook, stirring occasionally, until liquid is evaporated, about 30 minutes. Remove herb bundle and stir panko, Parmesan, salt, and pepper into the mushroom mixture. Transfer mixture to a food processor and purée until smooth. Let cool to room temperature.
• On a lightly floured surface, roll puff pastry to a 9"x15" rectangle. Place on a parchment-lined rimmed baking sheet and freeze until firm, about 5 minutes. Spread mushroom purée evenly on puff pastry. Starting from one of the long sides, tightly roll pastry until you reach the middle. Repeat on other side. Gently stretch the log to 18" and freeze until firm, about 1 hour.
• Preheat oven to 400°F and arrange racks in lower and upper thirds of oven. Line a second rimmed baking sheet with parchment. Cut the log in half crosswise, and cut each segment into 1/4" slices using a large sharp knife. Arrange slices on baking sheets at least 1" apart; brush with oil and sprinkle with flaky salt. Bake, rotating sheets top to bottom and back to front halfway through, until palmiers are golden and crisp, about 30 minutes. Let cool completely on baking sheets.
• Do ahead
• Pastry logs can be made up to 1 week ahead; store wrapped in plastic in the freezer. Palmiers can be baked up to 1 week ahead; store in an airtight container at room temperature, and re-crisp in a 325°F oven for 8-10 minutes before serving.