2009_07_21-gratin1.jpgThis is an easy, rustic recipe that makes a great vegetarian meal or a pretty summer side dish. We carted the whole thing over to Central Park the other night for an impromptu picnic dinner.

For this gratin, we didn't bother layering the vegetables in a pretty scalloped pattern. We practically threw the potato and squash slices in the pan, all mixed up together. Tastes the same, right?

The only complicated part is slicing the vegetables paper thin. We love our mandoline for this (they're not expensive, and we highly recommend one for so many dishes), but if you don't have one, you'll just need a bit more time and a very sharp knife.

There's not a ton of cheese and no cream (just a splash of milk to keep it tender), so the fresh taste of the vegetables is front and center. We sprinkled our gratin with basil at the end for a little color. It was a near-perfect dinner (and great leftover, FYI).

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Potato, Squash, and Goat Cheese Gratin
serves six

2 medium yellow squash
4 small to medium red potatoes
3 tablespoons olive oil
4 ounces goat cheese
salt and pepper
1/4 cup whole milk
1/3 cup freshly grated parmesan cheese
1 tablespoon thinly sliced basil, optional

Preheat oven to 400°F.

Use a mandoline or chef's knife to slice the squash and potatoes into very, very thin slices, 1/8-inch or less. Toss the sliced vegetables with the olive oil in a large bowl.

Pour a small drizzle of olive oil in a casserole dish (around 8 or 9 inches square) and spread it around the bottom and sides. Place 1/3 of the squash and potato slices in the bottom of the dish—no need to layer them squash-potato-squash-etc.—then season with salt and pepper. Top with half of the goat cheese, scattered evenly in large chunks. Repeat with another 1/3 of the vegetables, seasoning again with salt and pepper and topping with the other 1/2 of the goat cheese. Finish by layering on the final 1/3 of the vegetables and seasoning with salt and pepper.

Pour the milk over the entire dish. Top with the parmesan cheese. Bake, covered, for 30 minutes, then uncover and bake 15 more minutes, until the top browns. Scatter on the fresh basil, if using.

Related: Recipe: Kale and Potato Gratin

(Originally published July 21, 2009)

(Images: Elizabeth Passarella)