Leave the oil at room temperature until softened. Melt the chocolate and cool. Preheat the oven to 190 degrees. Cover the baking sheet with parchment.
In a bowl, beat the sugar with butter, buttermilk, vanilla, eggs and chocolate.
Add flour, baking soda and salt to the mixture. Stir until smooth.
With a tablespoon on a baking sheet, place the biscuits at a distance of 5 cm from each other.
Bake for 8-10 minutes. Remove immediately from the oven, remove from parchment, cool on a wire rack.
For the filling, first prepare the Italian meringue. Boil the sugar and water syrup to a temperature of 120 degrees. At the same time, beat the whites with salt and citric acid until peaks. Continuing to beat, pour in the syrup in a thin stream. Whisk until firm, white.
Continuing to beat, gradually add the icing sugar, butter and milk. Whisk into fluffy cream.
Combine the cookies in pairs with 3 tablespoons of the filling.
Crush the lollipops into large crumbs. Sprinkle candy crumbs on the sides of the resulting sandwiches.
The meringue cream sandwich cookie is ready. Bon Appetit!