• Spray a 9 by 13" glass baking dish with nonstick cooking spray and set aside.

To Make the Colored Jello Layers

• In a medium sized mixing bowl, combine one of the 3-ounce packages of Jello and 1/2 Tablespoon of gelatin. Stir, then add 1 cup of boiling water and mix until dissolved and you can't see any undissolved granules.
• Pour the Jello into the prepared glass baking dish and set it in the fridge, making sure it is level. Chill until set up—about 15-30 minutes.

To Make the White Jello Layers

• While the first colored layer is setting, take a small mixing bowl and combine 1 cup cold water and 4 packets of gelatin. Stir until dissolved and then let it sit for 2-3 minutes.
• In a large microwave-safe bowl, combine the two cans of sweetened condensed milk and the bloomed gelatin. Pour 1 cup of boiling water over the top and stir until combined and smooth.
• Pour one cup of this white layer over the colored layer and let it set up for about 10 minutes in the fridge. Prepare your next layer of colored jello while this one sets.

To Assemble the Layered Jello

• Continue alternating the colored Jello and 1 cup of the white Jello until you've reached your color pattern of choice with a total of 5 colored and 4 white layers.

To Cut the Layered Jello

• Run a sharp knife around the edges of the Jello. Take a sheet tray that is slightly bigger than the glass baking dish and turn the Jello upside down. Use a sharp knife to cut the edges off so that they will be uniform and straight, then cut into small cubes.
• Store in a covered container in the fridge for up to 5 days. Keep cool for best results. Enjoy!