Best Blueberry Cream Cheese Cookies

Make cookies: Preheat oven to 350°. Line two baking sheets with parchment paper. In a large bowl, cream together sugar, butter, and cream cheese until fluffy. Scrape down sides, then add egg, lemon juice and zest. Beat until combined. In a medium bowl, combine flour, baking soda, cornstarch, and salt. Beat into the wet mixture just until combined. Gently fold in blueberries. Using a large cookie scoop, scoop dough (about 3 tbsp) onto prepared baking sheets. Bake until cookies are set and edges turn lightly golden, 10 to 15 minutes. Let cool. Meanwhile, make glaze: Whisk together powdered sugar, cream, lemon juice and zest. Drizzle on top of cookies.