Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking pan and set aside.
Mix the melted butter and brown sugar in a large bowl until well combined.
Beat in the eggs and vanilla extract until smooth.
Stir in the flour and salt until just combined.
Gently fold in the white chocolate chips and raspberries.
Spread the batter evenly into the prepared baking pan.
Bake for 25-30 minutes until the top is golden brown and a toothpick inserted into the centre comes out clean.
Allow the blondies to cool completely in the pan before cutting them into squares.
Optional - Drizzle over the extra melted white chocolate