Onion Tart

Total Time: 1 hr 40 mins Preparation Time: 1 hr Cook Time: 40 mins

Ingredients

• Servings: 8
• 12 tablespoons unsalted butter, cold, cut into small pieces, plus more for tart pan
• 2 cups all-purpose flour, plus more for dusting
• 1 1/2 teaspoons salt
• 1/2 cup ice water
• 1 1/2 lbs onions, finely chopped
• 1 large egg, lightly beaten
• 1/2 cup heavy cream
• 1/4 teaspoon fresh ground pepper
• 1 pinch nutmeg, freshly grated
• 1/4 cup parmesan cheese, freshly grated or 1/4 cup swiss cheese

Recipe

• 1 butter a 10-inch tart pan with removable bottom; set aside.
• 2 make the crust: in a medium bowl, combine flour and 1/2 teaspoon salt.
• 3 add 8 tablespoons (1 stick) chilled butter, and combine with fingers or a pastry blender until it has the texture of coarse meal.
• 4 add 1/2 cup ice water, and stir just until a dough forms.
• 5 form into a disk, and wrap in plastic wrap.
• 6 chill for at least 15 minutes.
• 7 preheat oven to 375°.
• 8 on a lightly floured surface, roll out dough to 1/8-inch-thick round.
• 9 fit dough into prepared tart pan; trim excess.
• 10 line with a parchment paper round, and fill with pie weights.
• 11 chill for 15 minutes.
• 12 transfer to oven, and bake for 15 minutes.
• 13 remove pie weights and parchment paper.
• 14 bake for 5 minutes more.
• 15 remove from oven, and set aside.
• 16 in a large skillet, heat remaining 4 tablespoons butter.
• 17 add onions, and cook, stirring frequently, until slightly browned and softened, about 15 minutes.
• 18 remove from heat.
• 19 in a small bowl, combine beaten egg, cream, remaining 1 teaspoon salt, pepper, and nutmeg.
• 20 stir in onions.
• 21 sprinkle baked tart shell with cheese.
• 22 spread onion mixture evenly over cheese.
• 23 bake until set, 35 to 40 minutes.
• 24 serve immediately.