"Brown butter snickerdoodles with a caramel surprise inside!..."
INGREDIENTS
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2 1/2 cups all-purpose Gold Medal flour 1 teaspoon baking soda 2 teaspoons cream of tartar 1/2 teaspoon ground cinnamon 1/2 teaspoon sea salt 1 cup unsalted butter, sliced 1 1/4 cup dark brown sugar 1/2 cup granulated sugar 1 large egg 1 egg yolk 1 t