These classic thumbprint cookies feature a rich, buttery shortbread base with a tender crumb and a sweet jam center. The cookie is perfectly crisp on the edges and soft in the middle, with the fruit jam adding a bright, tangy contrast. Ideal for holiday cookie trays or an elegant afternoon treat.
Store cooled cookies in an airtight container at room temperature for up to 5 days. For longer storage, freeze the baked, unfilled cookies (without jam) in a single layer in a freezer-safe container for up to 3 months. To serve, thaw at room temperature, then fill with jam as directed. Filled cookies can also be frozen, but the jam may soften the cookie texture slightly upon thawing. If reheating, warm in a 300°F / 150°C oven for 3-4 minutes to crisp the edges.
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