Spicy, sweet, and punchy, baked fresh and served warm, this is the sort of starter that can precede almost anything. The generous sour cream base and the lightness of the puff pastry carry the sweet potato easily without the risk of a carb overdose. Serve with a plain green salad. —Yotam Ottolenghi
sweet potatoes, about 12 ounces each
puff pastry or 1/2 recipe Rough puff pastry
Preheat the oven to 400*F Bake the sweet potatoes in their skins for 35 to 45 minutes, until they soften up but are still slightly raw in the center (check by inserting a small knife). Leave until cool enough to handle, then peel and cut into slices 1/8 mm thick.
While the sweet potatoes are in the oven, roll out the puff pastry to about 1/16 inch thick on a lightly floured work surface. Cut out four 2 3/4 by 5 1/2-inch rectangles and prick them all over with a fork. Line a small baking sheet with parchment paper, place the pastry rectangles on it, well spaced apart, and leave to rest in the fridge at least half an hour.
Remove the pastry from the fridge and brush lightly with the beaten egg. Using an icing spatula, spread a thin layer of sour cream on the pastries, leaving a 1/4-inch border all round. Arrange the potato slices on the pastry, slightly overlapping, keeping the border clear. Season with salt and pepper, crumble the goat cheese on top, and sprinkle with the pumpkin seeds and chile. Bake for 20 to 25 minutes, until the pastry is cooked through. Check underneath; it should be golden brown.
While the galettes are cooking, stir together the olive oil, garlic, parsley, and a pinch of salt. As soon as the pastries comes out of the oven, brush them with this mixture. Serve warm or at room temperature.
Yotam Ottolenghi owns an eponymous group of four restaurants, plus the high-end restaurant, Nopi, in London. He writes for The Guardian, and appears on BBC. Sami Tamimi is a partner and head chef at Ottolenghi. Authors of the New York Times bestseller Jerusalem and the runaway hit Plenty, they have been featured in the New York Times, Saveur and the Los Angeles Times. They Live in London.