Preheat the oven to 180°C. Line 2 large baking pans with parchment, silicone baking mats, or spray with baking spray. Set aside

In a medium-size mixing bowl sift together flour, cocoa, baking powder, baking soda and salt.

Using an electric mixer, cream together butter,sugar and vanilla until fluffy, about 1-2 minutes. Add the egg, beat until incorporated.

Add the dry ingredients alternately with the milk beginning and ending with dry ingredients. Beat on medium speed just until fully incorporated

Using a medium ice cream scoop, drop mounds onto baking sheets, leaving at least 2 inches between.

Bake for 8-10 minutes or until a toothpick inserted into the center comes out clean.

Cool on the pan for 5 minutes then remove to a cooling rack to cool completely

In a bowl add the marshmallows and water and mix well until all marshmallow are coated.

Over a double boiler melt the marshmallows, use a non-stick spatula to stir the marshmallow be careful not to get everywhere as it's gonna be super sticky

Once melted divide filling evenly among half of the rounds. Top each with a matching size round

Serve with a cup of tea or coffee! 😋😋😋