ROASTED BUTTERNUT SQUASH AND CARAMELIZED ONION TART

Steps:

• Using a prepared pie crust or your favorite crust recipe. On a lightly floured surface roll out dough into a 12-inch round (about 1/8 inch thick).
• Fit dough into an 11-inch tart pan with a removable fluted rim.
• Freeze shell 15 minutes.
• Preheat oven to 375°F.
• Line shell with foil and fill with pie weights or raw rice.
• Bake shell in middle of oven until edge is pale golden, about 20 minutes.
• Carefully remove foil and weights or rice and bake shell 10 minutes more, or until bottom is golden.
• Leave oven on.
• Cool shell in pan on a rack.
• Halve squash and scoop out seeds.
• Lightly brush each cut side with about 1 teaspoon oil and on a baking sheet roast squash, cut sides down, in middle of oven 40 minutes, or until soft.
• While squash is roasting, thinly slice onion and in a heavy skillet cook in 1/2 tablespoon butter and remaining 1 1/2 teaspoons oil over moderate heat, stirring occasionally, until soft and golden brown, about 20 minutes.
• Cool squash and scoop out flesh.
• In a food processor purée squash.
• Add whole egg, egg yolk, and cream and blend well.
• Transfer mixture to a large bowl and stir in cheeses, herbs, onion, salt, and pepper to taste.
• Pour filling into shell, smoothing top.
• In a small skillet melt remaining tablespoon butter and stir in bread crumbs until combined well.
• Sprinkle bread crumb mixture evenly over filling.
• Bake tart in middle of oven 40 minutes, or until filling is set.
• Cool tart in pan on rack 10 minutes and carefully remove rim.