For the Shortbread Layer: 1/3 cup SOFT butter plus 1 extra tablespoon 1/3 cup granulated sugar ½ teaspoon vanilla extract ¼ teaspoon salt 1 cup flour
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Blend all in the mixer. Will be crumbly. Pat firmly into an 8x8 pan lined with nonstick foil. Bake at 350 for about 18 minutes until lightly browned. Cool.