Step 1

Set out two 13x9 pans or dishes (you can also use four square pans) and lightly spray them with cooking spray.

Step 2

In a medium bowl, combine 2 boxes of lime gelatin with 2 cups of boiling water.

Step 3

Stir until completely dissolved.

Step 4

Pour into one of the 13x9 pans.

Step 5

Repeat with 2 boxes of cherry gelatin.

Step 6

Pour the cherry gelatin into the other 13x9 pan.

Step 7

Place the pans into the refrigerator to set for about 1-2 hours.

Step 8

Lightly spray another 13x9 glass dish with cooking spray.

Step 9

In a medium bowl, stir together unflavored gelatin and 2 cups hot water until completely dissolved.

Step 10

Stir in sweetened condensed milk.

Step 11

Let set until mostly cooled down, about 20 minutes.

Step 12

Meanwhile, remove gelatin from the refrigerator and cut it into small cubes, about 1-inch square.

Step 13

Evenly place the gelatin cubes in the prepared 13x9 pan.

Step 14

When the milk and gelatin mixture is cooled, carefully pour it over the flavored cubes.

Step 15

Place it in the refrigerator to set for at least 4 hours.

Step 16

Cut it into bars and serve.

Step 17

Store leftovers in the refrigerator.