INGREDIENTS
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Nonstick vegetable oil spray
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1 pound purchased frozen semisweet chocolate chip cookie dough, thawed
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1/2 cup chopped walnuts
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1/3 cup sugar
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1/4 cup cornstarch
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1/8 teaspoon salt
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5 large egg yolks
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2 1/3 cups whole milk
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2 tablespoons (1/4 stick) unsalted butter
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1 tablespoon dark rum
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2 teaspoons vanilla extract
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3 medium bananas, peeled, cut into 1/2-inch-thick slices
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1 cup chilled whipping cream
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2 tablespoons powdered sugar
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Chocolate curls (optional)