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Combine the butter, cream cheese, and sugar in a large bowl. Beat with an electric mixer on medium speed until light and fluffy, scraping the sides and bottom of the bowl as needed.
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Add the egg yolk, vanilla, and salt and beat to combine.
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Turn the mixer to low and beat in the flour until just incorporated. Use a rubber spatula to fold in the raspberries and chocolate chips.
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Cover the bowl with plastic wrap and refrigerate for 2 hours.
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Preheat the oven to 375 degrees. Line 2 large baking sheets with parchment or spray with cooking spray. Set baking sheets aside.
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After the dough has chilled, shape it into balls of about 2 tablespoons of dough. Arrange on baking sheets 3 inches apart and flatten lightly with your palm.*
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Bake 12 to 18 minutes, until just beginning to turn light golden around the edges.
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Cool on the baking sheets for 1 minute then carefully transfer to wire racks to cool.
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Uneaten cookies can be stored in an airtight container in the fridge for up to 3 days or in the freezer for up to 2 months.