Preheat your oven to 350°F (175°C).
In a bowl, whisk together flour, baking soda, and salt.
In a separate bowl, cream the softened butter with brown and granulated sugars until smooth.
Add the egg and vanilla extract to the butter mixture, mixing well.
Gradually add the dry ingredients to the wet ingredients, stirring until just combined.
Fold in the white chocolate chips and dried cranberries.
Using a cookie scoop, drop rounded tablespoons of dough onto a lined baking sheet.
Bake for 10-12 minutes until golden brown around the edges.
Remove from the oven and let cool on the baking sheet for 5 minutes before transferring to a wire rack.