"Makes 15 cookies. Cookies stay soft & fresh for up to 1 week at room temperature. Cookies freeze well. Cookies may be rolled into balls and frozen up to 3 months to bake at a later date. Recipe can easily be doubled or tripled...."
INGREDIENTS
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1/2 cup (1 stick) unsalted butter, softened to room temperature*
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3/4 cup sugar
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1 large egg, at room temperature*
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1 teaspoon vanilla extract
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1 and 1/2 cups spoon & leveled all-purpose flour
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1/4 teaspoon salt
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1 teaspoon baking powder
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1/2 teaspoon baking soda
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1 teaspoon cream of tartar (can not be omitted)
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1/2 cup sprinkles, plus more for sprinkle on top before baking