Preheat oven to 350°F (175°C). Line your tray and pretend you're in a baking show.
Whisk flour, cornstarch, baking powder, and salt. Set aside like a responsible adult.
Beat vegan butter and sugar until creamy. Add vanilla and milk, mix until smooth like your favorite playlist.
Add dry mix to wet mix. Stir until it looks like something you'd secretly eat raw.
Scoop tablespoons of dough onto tray. Flatten slightly with your fingers or something less sticky.
Bake for 10–12 minutes until edges are golden. Cool completely or deal with melty regret.
For the topping, whip vegan butter with sugar, espresso, vanilla, and salt until it fluffs like drama on reality TV.
Pipe or spoon cream on top of each cooled cookie. Make them look as extra as you feel.
Chill to set or eat instantly because patience is overrated.
Garnish with a cocoa dusting or edible glitter, because you’re worth it.