Step 1

Preheat the oven to 325 degrees. Lightly grease a 9x9 pan and set aside. (You can also line the pan with parchment paper for easier removal.)

Step 2

Melt the butter and the white chocolate together in a double boiler over medium-low heat. Stir continuously to ensure the white chocolate gets heated evenly. Then remove from the heat.

Step 3

Add the eggs, egg yolks, sugar and vanilla to a large bowl and whisk together until pale and smooth. (You can also use an electric hand mixer on high speed to make it easier.)

Step 4

Pour in the white chocolate mixture and whisk until combined and smooth.

Step 5

Fold the flour and salt into the wet ingredients with a rubber spatula just until combined.

Step 6

Pour the white chocolate brownie batter into the prepared pan. Use a mini offset spatula to smooth the batter out.

Step 7

Bake the brownies for 29-33 minutes. Then let the brownies cool completely in the pan on a wire rack.

Step 8

Once cool, use a butter knife to loosen the edges of the brownies from the pan, and turn over to gently release. Cut into 16 squares and enjoy!