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1
Line two baking sheets with parchment.
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2
Combine butter, sugar and salt in a stand mixer (use paddle attachment).
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3
Mix on low speed until the butter combines with the sugar, but isn't perfectly smooth, 1-2 minutes.
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4
Add flour and mix on low, scraping frequently, until dough has just about pulled together, about 3 minutes.
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5
Don't overmix.
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6
Roll dough on a lightly floured surface to a uniform 1/4 inch.
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7
Cut dough into bars or squares with a sharp knife or use a cookie cutter.
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8
Reroll scraps- refrigerate dough if it becomes sticky.
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9
Arrange on baking sheets and refrigerate until chilled- about 20 minutes.
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10
Position racks in the upper and lower thirds of the oven and preheat to 300 degrees.
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11
Bake cookies until golden on the bottom and edges and pale to golden on the top- 30 minutes to 1 hour.
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12
Rotate baking sheets every 15 minutes.
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13
Cool.
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14
Variations: Brown sugar and oatmeal- use brown sugar in place of white and add 1/2 cup quick cooking oats with the flour.
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15
Chocolate dipped espresso- Add 2 Tbl finely ground espresso coffee beans with the flour.
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16
Dip half of each cooled cookie into melted chocolate (9 oz semisweet chocolate melted with 1 Tbl vegetable shortening).
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17
Place cookies on parchment line sheetpan to set up- 2 hours.
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18
Orange-Hazelnut- Add 2 1/2 oz (1/2 cup) skinned, toasted and finely ground hazelnuts (use food processor) and 2 tsp (loosely packed) finely grated orange zest from 1 orange along with the flour.