Prepare the plastic egg molds by lightly spraying the insides with cooking spray to prevent the gelatin from sticking. Set aside.
In a mixing bowl, combine the two packets of flavored gelatin with 2 cups of boiling water. Whisk until the gelatin is completely dissolved.
Once dissolved, add 1 cup of cold water to the gelatin mixture. If desired, divide the mixture into smaller bowls and add food coloring as needed.
Pour the gelatin mixture into the prepared egg molds, filling them about three-quarters full. Leave a small space for whipped cream filling, if desired.
Place the filled molds in the refrigerator and allow them to set for at least 4 hours, or until firm.
Once firm, remove the molds from the refrigerator. If using whipped cream, carefully fill each egg with whipped cream before sealing them with the top half of the mold, or serve with whipped cream on the side.
Gently twist and pull apart the egg molds to release the gelatin eggs.