"Butter Cookies are a classic favorite holiday cookie. Crisp, buttery cookies that melt-in-your-mouth, super simple with just 6 ingredients and no chilling!..."
INGREDIENTS
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1 cup unsalted butter (softened (226g))
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3/4 cup granulated sugar (150g)
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1 large egg yolk
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2 teaspoons vanilla extract
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1/4 teaspoon salt
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2 cups + 2 Tablespoons all-purpose flour (265g ("plain flour" in the UK))
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1 cup dark chocolate chips (170g)
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1/2 teaspoon vegetable shortening (I use Crisco)
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Nonpareil sprinkles (optional)