First, make the dough for the shells.
In a mixing bowl, mix butter and sugar for 2 minutes on low.
Increase speed and add eggs, one by one mixing well after each.
Mix salt, baking powder, and flour then add to the butter mixture, one tablespoon at a time.
Take the dough out of the mixing bowl and knead for a few minutes. You’ll need to have a soft-ish nonsticky dough
Preheat the mold on the stove on high heat
Form balls with your hands and place in the mold
Close the lid and bake for 2-3 minutes or until the shells are a golden brown. Flip the mold every 30 seconds to ensure even baking.
When done, gently tap the mold against a working surface to remove the shells.
To make the filling place the biscuits in a food processor and process until you get fine crumbles. Remove to a bowl
Repeat for the walnuts and place over the crumbled biscuits.
Add cocoa powder and sugar.
Heat the milk then pour over the biscuit mixture, adding small amounts at a time and mixing well.
Add rum extract and mix well.
Using a teaspoon, fill the shells with cream then stick the shells together.
Dust with powdered sugar – optional.
Voila! Your oreshki recipe is ready to impress your visitors (that is if you manage to keep some of these goodies for them too; you’re forgiven if you won’t).