Step 1

Line two baking trays with baking or parchment paper. Preheat the oven to 180 C (350 F) standard / 160 C (320 F) fan-forced.

Step 2

In a large mixing bowl, add butter and sugars and beat using an electric mixer on medium speed until smooth and creamy.

Step 3

Add vanilla and egg and beat on medium speed until combined. Add flour, baking soda, coffee and salt and beat on low speed just until a soft cookie dough forms.

Step 4

Stir through chocolate chips. Scoop out cookie dough (roughly 1.5 tablespoons each) into balls and roll smooth using the palm of your hands.

Step 5

Place cookie dough balls on baking trays, leaving room for the cookies to spread. Bake for 11-12 minutes or until golden brown.

Step 6

Leave cookies to cool completely on a wire rack. To speed up the process, place cookies in the fridge to chill.

Step 7

In a large mixing bowl, add cream, mascarpone and vanilla. Beat with an electric mixer on medium speed until soft peaks. Mixture should be thick and creamy.

Step 8

Use a piping bag fitted with a large round tip or just a dessert spoon to spread an even layer of frosting onto each cookie (ensuring the cookies have completely cooled).

Step 9

Use a fine sieve to lightly dust the top of the cookies with cocoa powder.