Cream the butter and the sugar together until well combined, scraping down the bowl as needed to get everything incorporated. Beat in the extract.
Whisk together the flour and cornstarch. Blend them into the butter and sugar, until it forms a dough.
Fold in the walnuts and make sure you get them well distributed in the dough.
Turn the dough out onto a floured suface and bring together into a smooth disk. Gently roll out to about 1/3" thick. Cut out cookies and, if desired, roll the edges in sugar. Transfer to your lined cookie sheet, leaving 2 inches between each one.
Preheat the oven to 350F. Refrigerate the cookies for 15 minutes while you clean up.
I bake my cookies in 2 batches. Bake for about 15-20 minutes. Baking on the shorter end will result in a softer cookie, while ones baked longer will be crunchier.
Cool for 2 minutes on the baking sheet, then cool completely on a rack. If you like you can roll the warm cookie edges again in sugar for a super sparkly look.
Nutritional information is provided as a courtesy and is an estimate only. This information comes from online calculators. Although The View from Great Island attempts to provide accurate nutritional information, these figures are only estimates.
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