Can this be made in under 30 minutes?

Yes, the recipe is designed to be quick and efficient.

Does it work for meal prep?

Most versions store well for one to three days.

Yes, simple swaps can be made for convenience or dietary needs.

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Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.
In a bowl, whisk together the flour, baking powder, and salt.
In a separate large bowl, beat the butter, granulated sugar, and brown sugar until light and fluffy.
Add the eggs one at a time, mixing well after each. Stir in vanilla extract and instant espresso powder until fully combined.
Gradually mix in the dry ingredients until a soft dough forms.
Scoop small portions of dough onto the prepared baking sheets and flatten slightly.
Bake for 8–10 minutes or until the edges are set and centers remain soft. Let cool completely on a wire rack.
To make the filling, beat mascarpone cheese and powdered sugar until smooth and fluffy.
Pipe or spoon the mascarpone mixture onto the flat side of half the cookies. Top with the remaining cookies to form sandwiches.
Lightly dust each cookie sandwich with cocoa powder before serving.

Chill your mascarpone for a firmer filling. Try variations by rolling the edges in chopped hazelnuts or powdered sugar.