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1
Whisk sugar, orange juice, lemon juice, eggs, egg yolks, and orange peel in medium metal bowl to blend.
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2
Add butter; set bowl over saucepan of simmering water and whisk constantly until curd thickens and instant-read thermometer inserted into curd registers 175F, about 12 minutes (do not boil).
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3
Remove bowl from over water.
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4
Press plastic wrap directly onto surface of curd; chill at least 1 day and up to 3 days.
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5
Blend flour, sugar, and salt in processor.
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6
Add butter and cut in, using on/off turns, until mixture resembles coarse meal.
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7
Add cream and egg yolk and process until dough clumps together.
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8
Gather dough into ball; flatten into disk.
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9
Roll out dough on floured surface to 13-inch round.
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10
Transfer to 10-inch-diameter tart pan with removable bottom.
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11
Fold dough overhang in and press onto pan sides, forming double-thick sides.
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12
Pierce crust all over with fork; freeze 30 minutes.
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13
Preheat oven to 375F.
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14
Bake crust until cooked through, about 30 minutes.
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15
Cool crust completely in pan on rack.
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16
Spread curd evenly in cooled crust.
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17
(Can be made 1 day ahead.
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18
Cover; chill.)
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19
Cut peel and white pith from oranges.
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20
Using small sharp knife, cut between membranes to release orange segments.
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21
Transfer segments to paper towels and pat dry.
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22
Arrange orange segments in concentric circles atop orange curd.
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23
Chill tart up to 1 hour.
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24
Remove pan sides.
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25
Cut tart into wedges.
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26
Drizzle lightly with Orange Caramel Sauce and serve.