Spread the seeds onto a baking sheet in a single layer.
Preheat an oven to about 100 degrees Fahrenheit. Leave the over door open and place a thermometer inside to ensure you achieve the necessary temperature.
Place the baking sheet into the oven and heat the seeds for six hours to dry them out, keeping the oven door open throughout the drying process.
Put on a pair of oven mitts and remove the sheet from the oven. Wait about 10 minutes for the seeds to cool to room temperature. Place the seeds into a moisture-proof container, sealing the container tightly. Place the container into a refrigerator with a temperature below 40 degrees Fahrenheit for storage.