Black-Bottom Key Lime Tart

Heat oven to 350°F. In food processor, place flour, butter, powdered sugar and salt. Cover; process, using quick on-and-off motions, until dough forms a ball. Press dough firmly and evenly in bottom and up side of ungreased 10-inch tart pan with removable bottom. Bake 20 to 25 minutes or until lightly browned. Cool completely, about 20 minutes.

Place chocolate chips in small bowl. In small saucepan, heat 1/2 cup whipping cream over medium heat just until hot. Pour over chocolate chips; let stand 2 minutes. Gently stir until smooth. Pour into partially baked crust, spreading to edge. Refrigerate 30 minutes or until firm.

In medium bowl, mix condensed milk, egg yolks, lime juice, lime peel and food color with whisk until blended. Pour filling over chocolate layer.

Bake 20 to 22 minutes or until center is set. Cool completely in pan on cooling rack, about 2 hours. Cover; refrigerate until chilled, at least 2 hours but no longer than 2 days. Garnish with whipped cream and lime slices. Store covered in refrigerator.