Step 1

Pour reserved mandarin orange juice into a measuring cup. Add enough water to make 3/4 cup. Bring juice mixture to a boil in a saucepan.

Step 2

Pour orange-flavored gelatin into a small bowl. Stir in boiling juice mixture until dissolved. Chill until slightly cooled, about 10 minutes.

Step 3

Stir orange soda gently into gelatin mixture. Measure out 1/2 cup gelatin mixture into a bowl. Whisk in whipped topping until smooth. Pour into crust.

Step 4

Refrigerate crust until topping is cool, about 15 minutes. Arrange mandarin orange segments on top of the crust. Chill again, about 10 minutes.

Step 5

Spoon remaining gelatin mixture over the orange segments and refrigerate until firm, about 3 hours.