Chocolate & Creamy Orange Mousse

1/4cup (1/2 stick) butter or margarine
1/4 cup cocoa
1 can (14 ounces) sweetened condensed milk (not evaporated milk), divided
2 tablespoons orange juice plus 2 teaspoons freshly grated orange peel or 2 tablespoons orange-flavored liqueur, divided
2 cups (1 pint) cold whipping cream


Melt butter in heavy saucepan over low heat; add cocoa, then 2/3 cup sweetened condensed milk, stirring until smooth and slightly thickened. Pour mixture into medium bowl; cool to room temperature. Beat in 1 tablespoon orange juice and 1 teaspoon orange peel.
Beat whipping cream in large bowl until stiff. Fold half of whipped cream into chocolate mixture. In second medium bowl, stir together remaining sweetened condensed milk, remaining 1 tablespoon orange juice and 1 teaspoon orange peel. Fold in remaining whipped cream.
Spoon equal portions of chocolate mixture into 8 dessert dishes, making a depression in center of each. Spoon creamy orange mixture into center of each. Refrigerate until well chilled. Garnish as desired. Cover; refrigerate leftover dessert.