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1
Preheat oven to 350u00b0. Spray 2 mini-muffin trays (12 muffin cups each) with cooking spray. In a food processor, whirl cookies into fine crumbs. Measure; return 1 1/2 cups crumbs to food processor, along with 1/4 cup plus 2 tbsp. sugar, the salt, and 1 egg white. Pulse to blend evenly.
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2
Spoon 1 tbsp. crumb mixture into each muffin cup. Press crumbs over bottom and up sides of cups. Bake until set, 15 minutes.
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3
Put chocolate and butter in a microwave-safe container and heat in 30-second intervals, stirring often, until melted.
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4
In a small bowl, combine 1/4 cup sugar, the cornstarch, and 4 tsp. cocoa. Pour in a few tbsp. of the milk and whisk into a smooth paste; whisk in remaining milk. Transfer to a small saucepan and cook over medium heat until thickened and large bubbles appear, about 3 minutes.
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5
Put reserved yolk and remaining egg into a medium bowl. Whisk in about 1/2 cup hot milk mixture. Scrape egg-milk mixture into milk mixture in pan and cook, whisking, until just starting to boil, about 30 seconds. Whisk in melted chocolate and butter.
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6
Spoon hot filling into chocolate shells. Press plastic wrap over surface of mini pies to prevent a skin from forming. Chill until set, at least 1 hour and up to 2 days.
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7
Remove pies from trays. Whisk cream with remaining 2 tbsp. sugar into soft peaks. Spoon a dollop of cream onto each mini pie. Dust pies with remaining cocoa.
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8
Note: Nutritional analysis is per pie.
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9
Use a wine cork or a shot glass to press the crumbs into the tiny muffin cups.
