Blackberry-Cinnamon Diagonals
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By Appears in Cook's Illustrated November/December 2023
These buttery, jam-filled diamonds come together with ingredients that you probably have on hand.
WHY THIS RECIPE WORKS
Our jam diagonals are a slightly more sophisticated form of thumbprint cookies, but they're even easier and quicker to make. We started by mixing together a simple shortbread dough, but instead of portioning, rolling, and filling individual...
