Prepare flavored gelatins according to package directions.
Pour each one into a mold, making sure the mixture does not exceed 2 cm. in height.
Refrigerate the flavored gelatins until set.
Hydrate the grenetina with 1⁄4 cup water. Let stand for 10 to 15 minutes until firm.
Blend the oat milk with the oats, cinnamon and vanilla.
Incorporate the previously melted grenetina and continue blending until it is integrated.
Cut the flavored gelatins into cubes and place in a deep mold.
Cover with the oatmeal jelly mixture.
Refrigerate for a minimum of 3 hours, ideally overnight.