BUTTERNUT-SQUASH AND KALE GRATIN

Butternut-Squash and Kale Gratin image

Provided by Martha Stewart

Time 1h20m

Number Of Ingredients 8

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1 butternut squash (about 3 pounds), peeled
1/2 bunch kale (about 8 ounces), stems and tough ribs removed, leaves torn into large pieces (about 7 packed cups)
Unsalted butter, for baking dish
Coarse salt and freshly ground pepper
3/4 cup finely grated Parmesan (about 2 ounces)
1/4 cup packed small fresh sage leaves
1 1/2 cups heavy cream
2 tablespoons panko

Steps:

Preheat oven to 400 degrees. Slice squash just above bulb. Slice squash neck crosswise into 1/4-inch rounds. Cut squash bulb in half lengthwise. Remove seeds with a spoon; discard. Slice each half crosswise into 1/4-inch half-moons.
Set a steamer basket in a large pot filled with 1 inch water; bring to a boil. Add kale, cover, and steam until bright green and wilted, about 3 minutes. Remove from heat; let cool slightly. Squeeze dry.
Butter a shallow 4-quart baking dish (13 by 9 inches). Arrange half of sliced squash in dish, shingling pieces to overlap. Season with salt and pepper. Top with kale, season with more salt and pepper, and sprinkle with 1/2 cup Parmesan and 2 tablespoons sage. Place remaining squash on top, overlapping pieces slightly; season with more salt and pepper. Pour cream over squash and sprinkle with remaining 2 tablespoons sage.
Cover tightly with parchment-lined foil and bake until squash is tender, about 40 minutes. Uncover and sprinkle with panko and remaining 1/4 cup Parmesan. Bake, uncovered, until golden, 10 to 15 minutes more. Let cool slightly before serving.