In a food processor, blend the 1 ½ cups freeze dried strawberries into a powder.
Beat 1 ½ cups heavy whipping cream in an electric stand mixer fitted with a whisk attachment (or into a large bowl with a handheld electric mixer). Beat for 4-6 minutes until medium-stiff peaks form. Be careful not to overheat otherwise it can turn into butter.
Transfer the whipped cream to another large bowl and set aside in the fridge.
In the now-empty bowl of an electric mixer (from before) with a paddle attachment, beat the 16 ounces cream cheese block and 1 teaspoon pure vanilla extract for 2 minutes.
Add half the confectioners sugar (1 cups confectioners sugar) and mix until combined. Add the remaining confectioners sugar (1 cups confectioners sugar) and mix on medium speed for 2 minutes. Scrape down the sides of the bowl as needed.
Add the blended strawberry powder to the cream cheese mixture and mix for 2 minutes, scraping down the sides of the bowl a few times to ensure everything is incorporated.
Carefully add in ¼ cup of the whipped cream at a time into the cream cheese mixture and mix on low speed or fold with a spatula, just until combined.
Refrigerate the filling for at least 30 minutes for best spreadable consistency for a cake.