Recipe: Gratin remade is healthier than most
Looks like a fall dish, doesn't it? Gruyère cheese and herbs top slices of potato and winter squash. (Photos: Kathy Morrison)
Potato gratins are popular side dishes, especially as the weather cools. But most gratins are so loaded with cream, butter and cheese that they could qualify for the "heart attack on a plate" label that is firmly attached to such dishes as fettucine alfredo. Not going there, thanks.
Looking for something new to do with the best of the winter squash -- butternut, of course -- I found a gratin recipe that uses half squash, half Yukon Gold potatoes, milk instead of cream, no butter, and just 4 ounces of cheese. Hmmm, this had potential.
The one caveat: Almost everyone who had tried this New York Times recipe said it had way too much liquid in it, and it took too long to cook.
OK, I thought, that's a good challenge: Let's remake this recipe so that's it's workable and flavorful without being a soupy mess.
My plan of attack: One, I salted the vegetables before cooking, to draw out the extra water. This especially worked with the Yukon Gold potatoes. (Note, don't use russets as a substitute; they have different cooking times.) Two, I reduced the amount of liquid in the recipe. Three, I spread the vegetables out in a larger baking pan than I would have used normally. Four, I turned up the heat a bit.
The result: A delicious, cheesy, crunchy top layer, perfectly cooked veggies, and just a little bit of extra liquid in the bottom of the dish. Use a slotted spoon to serve and you can avoid having it pool on the dinner plates.
Orange squash, yellow potatoes, pale yellow
cheese -- the colors of fall.
1-1/2 pounds of Yukon Gold potatoes, scrubbed but unpeeled
1-1/2 pound piece of butternut squash (I used half of a 3-pound squash)
2 cloves garlic
4 ounces Gruyère cheese, shredded, divided
1 teaspoon or more fresh thyme leaves
1/2 teaspoon fresh rosemary leaves, minced, optional
Freshly ground black pepper
2 cups low-fat milk
Cover two rimmed baking sheets with parchment paper and set aside.
Slice the potatoes into 1/4-inch rounds and spread them across one of the pans. Peel and seed the butternut squash, cut it into 1/4-inch half-round pieces, and spread those across the other pan.
Sprinkle each pan with 1/4 teaspoon of the kosher salt, and set the pans aside for 15 minutes to draw out the liquid from the vegetables.
Preheat oven to 400 degrees. Prepare a large rimmed baking dish; I used a ceramic 10-by-13-inch roasting pan. If desired, cut one of the garlic cloves in half and rub the halves around the edges of the dish. Then, whether you used the garlic or not, grease the dish bottom and sides with a light coating of olive oil.
Mince the other garlic clove and anything remaining from the cut one; set aside. Combine the thyme and the rosemary (if using) in a small bowl with some ground black pepper.
When 15 minutes are up, blot the liquid as much as possible from the potato and squash slices, using a clean kitchen cloth or thick paper towels.
Layer half the squash slices across the bottom of the pan, as evenly as possible. Then layer half the potato slices over the squash. Sprinkle the vegetables with half the garlic, about 1/3 of the herbs, and 1/4 packed cup of the cheese.
Repeat the layers, starting with squash and ending with 1/4 cup of cheese. You should have about 1/2 cup (or more) of cheese remaining and just a bit of the herbs; set those aside for now.
Carefully pour all the milk around the vegetables (easiest from the edge). Grind some more black pepper over the top of the casserole, sprinkle on just a pinch more salt, and slide the dish into the oven. Bake for 40 minutes; the cheese and potatoes should just be starting to brown by then.
Here's the dish ready to go in the oven. More cheese will be
Remove the pan to a cooling rack and let it rest at least 10 minutes before serving.
This gratin can be made ahead and reheated.
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Dig In: Garden checklist for week of Sept. 25
This week's warm break will revive summer crops such as peppers and tomatoes that may still be trying to produce fruit. Pumpkins and winter squash will add weight rapidly.
Be on the lookout for powdery mildew and other fungal diseases that may be enjoying this combination of warm air and moist soil.
* Late September is ideal for sowing a new lawn or re-seeding bare spots.
* Compost annuals and vegetable crops that have finished producing.
* Cultivate and add compost to the soil to replenish its nutrients for fall and winter vegetables and flowers.
* Plant for fall now. The warm soil will get cool-season veggies and flowers off to a fast start.
* Plant onions, lettuce, peas, radishes, turnips, beets, carrots, bok choy, spinach and potatoes directly into the vegetable beds.
* Transplant lettuce, cabbage, broccoli, kale, Brussels sprouts and cauliflower.
* Sow seeds of California poppies, clarkia and African daisies.
* Transplant cool-weather annuals such as pansies, violas, fairy primroses, calendulas, stocks and snapdragons.
* Divide and replant bulbs, rhizomes and perennials.
* Dig up and divide daylilies as they complete their bloom cycle.
* Divide and transplant peonies that have become overcrowded. Replant with "eyes" about an inch below the soil surface.
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