Servings: Makes 4 servings
In a food processor, combine flour, butter, salt, and sugar; pulse until it forms a coarse meal. Continue pulsing and add water, 1 tablespoon at a time, until meal moistens into dough. Form dough into disc; wrap in plastic. Refrigerate at least 30 minutes.
Meanwhile, in a large sauté pan over medium flame, heat oil and butter. Once hot, add onions; cook slowly until golden brown, about 25 minutes. Stir in thyme, salt, and pepper. Set aside.
Preheat oven to 375°F. Roll out dough on a floured piece of parchment into 14- to 15-inch circle. Place cooled onion mixture in center, fold over edges about 2 inches. In a small bowl, combine egg yolk and heavy cream; brush mixture over edges of dough. Bake until golden brown, 20 to 25 minutes. Serve warm.
From the May 2004 issue of O, The Oprah Magazine
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