Preheat the oven to 350 degrees. Grease a 9x9 pan and line it with parchment paper.
Melt 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.
8 oz (226 g) high quality white chocolate bars, chopped (Lindt or Ghirardelli bars), ¾ cup (168 g) unsalted butter, chopped into small cubes
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.)
2 eggs, 2 egg yolks, 1 ¼ cups (250 g) granulated white sugar, 1 tablespoon (15 ml) vanilla extract
Pour in the melted butter and white chocolate mixture and whisk until combined and smooth.
Fold the flour and salt into the wet ingredients with a rubber spatula just until combined.
1 ¾ cups (219 g) all-purpose flour, spooned and leveled, ¾ teaspoon salt
Add the freeze dried strawberries to a food processor and pulse until they are finely ground. Fold the ground freeze-dried strawberries into the batter.(It's important to wait to grind up the strawberries until you're ready to add them to the batter. If you live in a humid climate like me, they will get really clumpy and difficult to work with!) 2 ½ cups (50 g) freeze-dried strawberries
Pour the strawberry brownie batter into the prepared pan. Use a mini offset spatula to smooth the batter out.
Bake for 28-31 minutes. Let the brownies cool completely in the pan on a wire rack.
Once cool, use a butter knife to loosen the edges of the brownies from the pan, and turn over to gently release.