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My son loves jello and could probably eat it everyday.  But of course thats no fun, eventually you'll get burnt out on things like that.  That's when my husband pinned this pin for broken glass jello.  But that pin is for later. For the first one we did the other recipe on that website called 7 layer jello.

Here's what you need.
4 pkgs jello any flavor
4pkg unflavored gelatin
1 can sweetened condensed milk

Pick a jello flavor & mix 1/2 a pkg of gelatin into the powder.  Mix in 1 cup boiling water. Stir. Let cool to room temp & then pour into 9x13 pan. 
The directions say make sure your fridge is level. Mine is not & truly theres nothing you can do about it. So I stuck a bag of baby carrots under the pan which wasn't exactly level either.
Mix 1 can sweetened condensed milk with 1 cup boiling water. In a small bowl sprinkle 2 pkg unflavored gelatin over 1/2 cup cold water.  Let this sit for a few minutes & then add 1/2 c boiling water to dissolve gelatin; add to milk mixture & stir to combine. Cool to room tempand pour 1 cup of milk mixture over first layer of jello. Refrigerate for 15 minutes.
Repeat for next 3 flavors Alternating between jello & milk mixture. Let it set & enjoy!

***Tip I recommend cutting the milk recipe into 2 halves. 
For example mix 1/2 can sweetened condensed milk with 1/2 cup boiling water. Sprinkle 1 pkg gelatin over 1/4 cup cold water & then add 1/4 cup boiling water & then cobine together. 
I say this because by the time I was ready for the last layer of milk it had been sitting so long it had started to gel up making my last layer lumpy and thin.