To store frosted cookies, keep them at room temperature in an airtight container for up to 2 weeks after the icing has completely hardened.
Here's a breakdown for best results:
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Allow Icing to Harden: This is crucial! Ensure the frosting is completely dry to the touch before you stack or store the cookies. This prevents smudging and sticking.
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Airtight Container: Use an airtight container to prevent the cookies from drying out or becoming stale.
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Room Temperature: Store the cookies at room temperature, away from direct sunlight or heat sources.
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Layering: If stacking the cookies, place a layer of parchment paper or wax paper between each layer to prevent them from sticking together and protect the frosting.
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Avoid Refrigeration (Generally): Refrigerating frosted cookies can sometimes dry them out. It's best to stick to room temperature storage unless your icing specifically requires refrigeration.
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Freezing (If Needed for Longer Storage): Frosted cookies can be frozen for longer storage (up to 2-3 months). Freeze them in a single layer on a baking sheet before transferring them to a freezer-safe container with parchment paper between layers. Thaw completely at room temperature before serving.