You can store your Homemade 100 Grand Bars in an airtight container in the refrigerator for up to 1 week. Make sure to separate the layers of bars with parchment paper to prevent them from sticking together. You can freeze them for up to 3 months in an airtight container or freezer bag. To thaw, remove them from the freezer and let them sit at room temperature for about 30 minutes before serving. It's best to store your Homemade 100 Grand Bars in the refrigerator, especially if you live in a warm or humid climate. At room temperature, the chocolate and caramel may soften or melt, and the bars may lose shape and become messy. If you plan to serve them at a party or event, you can leave them at room temperature for a few hours, but keep them in a cool, dry place away from direct sunlight or heat sources.