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Posted on Sat, Nov 21, 2009 : 5:08 a.m.

Peggy Lampman's Saturday dinnerFeed: Roasted garlic mashed potato and mushroom casserole

By Peggy Lampman

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Layered Roasted Garlic Mashed Potatoes and Mushrooms

Peggy Lampman | Contributor

I've always envied those Thanksgiving Day hosts who rely on their guests to provide the feast. In conversations with these delegating divas they politely inquire as to my menu. I rapidly fire off the recipes with the precision of a drill sergeant.

"All I really have to worry about is cleaning the house," they reply to me gently, shaking their heads at my seeming naivety.

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Preparing garlic for roasting.

Peggy Lampman | Contributor

lampmanroastedgarlic,jpg

Peggy Lampman | Contributor

All week I've been studying lists and mapping Thanksgiving strategy as if preparing for defense against some perceived threat. My family and friends know how to wield chef knives, I never hesitate to host a potluck, so what genetic tic insists I make all the food for Thanksgiving?

This family favorite is a great make-ahead for cooks such as myself, who insist upon tackling the whole feast, yet don’t want to scurry around mashing potatoes at the last minute. It's a recipe for the Type A personality that tells their guests, "Oh, it was nothing," yet took 3 days of vacation time to organize the menu, still dropping their kids off at child-care.

Roasted Garlic Mashed Potato & Mushroom Casserole has your number, as well, if you've been delegated by the savvy host to bring a dish. It can easily be made 24 hours in advance, wrapped, refrigerated, then popped into the oven right before serving.

Yesterday I accepted my daughter's offer to bring dessert. Progress.

Thanksgiving Day Recipe Countdown: Pear, Pomegranate and Pistachio Salad with Balsamic-Maple Vinaigrette; Savory Spinach Stuffed Mushrooms; Stuffed Acorn Squash with Wild Rice and Fruit; Crispy Roast Turkey (includes video); Sweet Potato-Pear Soup; Balsamic Portobellas stuffed with Mashed Potatoes; Glazed Butternut Squash and Apples; Roasted Brussel Sprouts; Wild Rice Stuffing with Sausage and Fennel; Yogurt and Fig Cake with many more to follow on dinnerFeed.

Yield: 8-10 servings Cost: apx. $15.50 Active Time: 25 minutes Bake Time: apx. 40-45 minutes

Ingredients

1 large garlic head 1 tablespoon extra virgin olive oil 3 pounds potatoes, Yukon Gold or Russet 3 tablespoons unsalted butter 2 tablespoons sour cream 3/4-1 cup half-and-half or milk 1/2 cup chopped basil 2 leeks, finely chopped 1/2 pound button mushrooms 1/2 pound shitake mushrooms 1-2 cups grated Asiago cheese

Directions

1. Preheat oven to 400˚. 2. Cut off pointed end of garlic head and drizzle exposed clove tops with olive oil. Arrange garlic in on a double thickness of foil, cover with foil and seal edges tightly. Roast garlic on the middle rack of oven for about 40 minutes or until very soft. Cool, then squeeze garlic from skins. Reduce oven temperature to 350˚. 3. While garlic is roasting, bring large pot of salted water to a boil. Peel potatoes and cut into 1-inch chunks. Boil for 10 to 12 minutes or until tender. Drain. 4. Mash potatoes, butter, sour cream and half-and-half or milk until smooth. Add more half-and-half or milk, if necessary, to make a creamy mixture. Stir in basil and season to taste with kosher salt and freshly ground pepper. Reserve. 5. Over medium-low heat, melt butter in a large sauté pan. Sauté leeks with a pinch of kosher salt for 5 minutes, stirring occasionally. Remove woody ends from mushrooms, wipe clean, slice and stir into leeks. Sauté an additional 1-2 minute or until just softened. 6. In a 9X12-inch baking dish, evenly spoon 1/2 of mashed potatoes, spreading evenly with a spatula. Evenly layer leek and mushroom mixture over potatoes and top with remaining potatoes, smoothing with spatula. Sprinkle casserole with 1-2 cups grated cheese, according to taste. 7. Cover casserole with lightly greased foil and bake 30 minutes. Remove foil and bake an additional 10-15 minutes or until cheese is lightly browned and bubbly.

Visit me on dinnerFeed for more more seasonal recipes and local value. Mini-recipes daily fed to you on my dinnerFeed Twitters.

Comments

Peggy Lampman

Sat, Nov 21, 2009 : 12:29 p.m.

Happy Thanksgiving! Remember to lightly oil the foil before covering the casserole or the cheese may stick to the foil! I've had that happen with lasagna and it's so sad to lose the cheese! Peggy

Mary Bilyeu

Sat, Nov 21, 2009 : 9:57 a.m.

This has all my favorite foods combined in one dish, and looks fabulous! As another who does all the cooking and preparation, any shortcuts are greatly appreciated....

vicki

Sat, Nov 21, 2009 : 7:59 a.m.

This will be an excellent addition to our menu for the big Thanksgiving feast! Thank you again, Peggy for sharing a great recipe.