Preheat your oven to 350 degrees Fahrenheit. Grease a 9x9 pan and line it with parchment paper.
Melt the butter and white chocolate together in a double boiler over medium-low heat. Keep stirring until smooth, then take it off the heat.
In a large bowl, whisk together the eggs, egg yolks, sugar, and vanilla until pale and smooth. You can use an electric hand mixer for a quick blend.
Pour in the melted butter and white chocolate mixture, whisking until everything is well combined.
Gently fold in the flour and salt with a rubber spatula until just combined.
Now, here's the fun part: grind up those freeze-dried strawberries in a food processor until they're finely ground. Fold them into the batter.
Pour the batter into your prepared pan, smoothing it out with a mini offset spatula.
Bake for 28-31 minutes, then let the brownies cool completely in the pan on a wire rack. Once cool, gently release them from the pan.