Mix flaxseed meal with water and let it sit while you question life choices.
In one bowl, combine flour, baking soda, and salt.
In another, cream butter with both sugars. Add flax egg, milk, and vanilla.
Stir dry ingredients into wet until smooth. Fold in chocolate chips like a classy rebel.
Make the filling: Beat vegan butter, espresso powder, sugar, milk, and vanilla until fluffy enough to flirt with.
Chill filling for 10 minutes to firm up. Chill yourself too, while you're at it.
Scoop cookie dough, flatten each portion slightly. Place a teaspoon of coffee cream in the center.
Cover with another scoop of dough and seal edges. Think cookie pillow, not crime scene.
Bake at 350°F (175°C) for 14 minutes. Let cool (or don’t—no one’s judging burnt tongues).