Mosaic Cake without eggs

First we cook according to the instructions on jelly bags of 3 different colors (for example, lemon yellow, strawberry red and green with kiwi). After 5-6 hours, we will make sure that the colored jelly has safely frozen, and only after that we proceed to the next stage. We take colorless gelatin, soak it in half a glass of warm water for 10 minutes, and then gently dissolve it in a water bath. Beat sour cream with sugar with a mixer, add vanilla. Then very carefully, in a thin trickle, pour the dissolved gelatin into the sour cream, continuing to beat.
And now it's time to involve children in the process: the fun begins! You need to break the cookies into pieces, cut the jelly (cubes or as it turns out), and then throw the cookies and jelly into a mold for the future cake, lined with plastic wrap from the inside. Each layer is filled with sour cream on top, and so on until the jelly runs out. We spread the last layer of the cake with cookies, and then we take our masterpiece to the refrigerator and leave it there.
The cake will be ready tomorrow! All that remains is to turn it over, remove the film and cut it into pieces. On a white sour cream background, a colored mosaic of jelly and cookie pieces will be found, arranged in an artistic mess. Mosaic cake will make a splash at any children's party!