Preheat the oven to 350°F. Line a baking sheet with parchment paper.
Prepare the streusel by mixing the ground freeze dried strawberries, flour, sugar, and melted butter with a fork until it forms a crumbly mixture. Set aside.
In a small bowl, toss the diced strawberries in one tablespoon of the flour. Set aside.
In a large mixing bowl, whisk together the remaining 1¾ cups of flour, ground freeze dried strawberries, cornstarch, baking soda, and salt. Set aside.
In a separate mixing bowl, beat the softened butter with the granulated sugar and brown sugar with a stand mixer or with a hand mixer until it looks creamy.
Beat the eggs, vanilla extract, and lemon zest into the butter mixture until it’s well combined.
Add the dry ingredients to the wet ingredients. Gently mix the dough with a large spoon or spatula just until there is no visible dry flour. Gently fold the strawberries into the dough.
Use a large cookie scoop or two spoons to shape the cookie dough into balls. Place them on the baking sheet spread out at least 2 inches apart.
Gently flatten the tops of the cookies and sprinkle the streusel on top, gently pressing it in to get the streusel to stick to the sides.
Bake for 12 to 15 minutes, just until they start to turn golden around the edges. Allow them to cool and firm up for a few minutes on a baking sheet, then transfer to a cooling rack & enjoy!!