Step 1

Cut each orange in half. Remove orange sections, leaving the cup of rind. Continue until all 9 oranges are cut in half and scooped out (so 18 orange cups are ready). Set orange cups in muffin tins to keep each upright. Set aside.

Step 2

Prepare six flavors of gelatin according to package directions, one at a time. With each flavor, fill 3 orange cups, filling up to the edge of the cup. Pour leftover gelatin into a food storage container and refrigerate to use as desired later. Repeat until all 6 flavors are made and all 18 orange cups are filled.

Step 3

Carefully place muffin tins into the refrigerator and chill at least 4 hours (overnight is better) until fully set.

Step 4

Remove each orange cup from the muffin tin and, using a sharp knife, slice into three wedges. Continue until all orange cups are sliced into colorful wedges. Place wedges on a serving platter in rainbow-color order (light to dark).

Step 5

Serve immediately, or return plate of wedges to the refrigerator until serving time.