Step 1

Empty 1 small box of Jello into a small glass bowl. Add 1 cup boiled water to jello. Stir until well dissolved.

Step 2

Add 2/3 cup sour cream and whisk until well blended.

Step 3

Pour mixture into both glass pans, place in the fridge making sure they are level, and chill until set, about 30-45 minutes.

Step 4

Repeat with the same flavor, adding 1 cup boiled water and 1/3 cup cold water to jello.

Step 5

Let stand for 10 minutes. Pour onto the chilled 1st layer, tilting the pan if necessary to spread, and refrigerate until set.

Step 6

Continue repeating layers following steps 1 and 2, alternating one with sour cream then one without until each flavor is used.

Step 7

Once the jello is completely set, slice into 1-inch squares using a paring knife and serve. Using a small spatula will help you get the jello cubes out of the pan. If desired top with Cool Whip.