Evenly sprinkle the gelatin and magnesium on top of the liquid and let it rest.
Once the mixture has bloomed and absorbed, add the rest of the ingredients.
Turn the stove onto medium-low heat and gently whisk the gelatin mixture. Don't over stir or it will get really foamy.
Once it's completely melted and combined, pour the mixture into your molds of choice. You can use silicone molds for fun shapes, or a square glass baking dish.
Place the magnesium gummies in the fridge for several hours or until firm. Cut into 9 squares.
Notes
Storage: These keep best in the fridge in an airtight container
Dose: Since these are food-based I don't "dose" them like medicine. However, each serving size has about 450mg of magnesium. In general, 1 square is enough for children, and 2 for adults, but you could easily cut the magnesium added in half if desired.