Preheat oven to 350°F (175°C). Line baking tray with parchment.
Beat cold vegan butter with powdered sugar until smooth and fluffy.
Mix in vanilla. Add flour and salt. Stir until dough forms and barely crumbles.
Gently fold in mini chocolate chips. Channel inner shortbread queen.
Roll dough into 1-inch balls and flatten slightly on baking tray.
Bake for 12–15 minutes, until the edges whisper golden perfection.
Cool completely on rack. You know, patience and all that.
For the filling: mix cream cheese, espresso, powdered sugar, vanilla, and salt until velvety.
Pipe or spread filling on half the cookies. Top with remaining ones.
Press gently—no cookie casualties today, please.
Chill for 10 minutes if you want firm centers, or devour immediately.