Step 1

In a medium bowl, stir hot water into the Jell-O powdered gelatin until it is completely dissolved. Add the mandarin orange juice and the softened sherbet and continue to mix until the sherbet is melted.

Step 2

Spray a jello mold (or an 8x8-inch glass pan) with nonstick spray. Pour the Jell-O mixture into the mold and gently scatter the orange slices into the mixture.

Step 3

Refrigerate for several hours (or overnight) until well set. Carefully turn out the chilled jello mold onto a decorative plate (see tips below).  Or if you used a square dish, you can just put it out for scooping and serving.  Keep refrigerated until ready to serve.