Leek and Gruyère Quiche

• 1 tablespoon(s) butter
• 3 tablespoon(s) canola oil
• 1 cup(s) all-purpose flour
• 1/4 teaspoon(s) salt, (for crust)
• 1 tablespoon(s) ice water
• 2 teaspoon(s) extra-virgin olive oil
• 8 ounce(s) (about 2 cups) leeks , white and light green part only washed thoroughly and thinly sliced
• 2 large eggs
• 4 large egg whites
• 3/4 cup(s) evaporated nonfat milk
• 3/4 cup(s) fat-free or low-fat milk
• 1/4 teaspoon(s) salt
• 1/4 teaspoon(s) freshly ground pepper
• 1/4 teaspoon(s) freshly grated nutmeg
• Pinch of cayenne
• 1 teaspoon(s) Dijon mustard
• 1 tablespoon(s) fine dry breadcrumbs
• 3/4 cup(s) (about 3 ounces) shredded Gruyère cheese
• 1 tablespoon(s) freshly grated Parmesan cheese

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Directions

1. To make crust: Position rack in the lower third of the oven; preheat to 425 degrees.
2. Melt butter in a small saucepan over low heat. Cook butter, swirling the pan, for about 30 seconds, or until it is a light nutty brown. Pour into a small bowl and let cool. Stir in canola oil.
3. Whisk flour and 1/4 teaspoon salt in a medium bowl. Slowly stir the butter-oil mixture into the flour mixture with a fork until it is crumbly. Gradually stir in enough ice water for the dough to hold together. Gather the dough into a ball.
4. Place the dough between two sheets of plastic wrap and flatten into a disk. Roll into a 12-inch circle. Remove the top plastic sheet and invert dough into a 9-inch pie pan. Remove the remaining plastic. Fold edges under at the rim and crimp.
5. Line the dough with a piece of foil or parchment paper large enough to lift out easily; fill evenly with pie weights or dried beans. Bake for 7 minutes. Remove paper and weights and bake for 3 to 5 minutes longer, or just until lightly browned. (The crust will not be fully baked.) Cool on a wire rack. Reduce oven temperature to 350 degrees.
6. To make filling: Meanwhile, heat olive oil in a nonstick skillet over low heat. Add leeks and cook, stirring occasionally, until the leeks are soft and wilted, 15 minutes. Set aside to cool.
7. Whisk eggs and egg whites in a large bowl. Add evaporated milk, fat-free or low-fat milk, 1/4 teaspoon salt, pepper, nutmeg and cayenne, stirring gently to avoid creating bubbles.
8. To assemble and bake quiche: Spread mustard over the bottom of the prebaked crust; sprinkle evenly with breadcrumbs. Top with Gruyère, then the cooked leeks. Carefully pour in the egg mixture. Sprinkle with Parmesan. Bake until just set and a knife inserted in the center comes out clean, 25 to 30 minutes. Transfer to a wire rack and let cool for at least 10 minutes before slicing.

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