The combination of dried prunes and walnuts is not unusual. I have tried it as a filling in buns in a favorite patisserie in Sofia. The pralines I present are extremely easy and impressive if you have to prepare something quickly. Improvisations could be countless.
200 g of dried plums (the weight is measured with pits)
1 cup ground walnuts
2 tbsp coconut oil, odorless
1 tbsp cocoa butter
1 tbsp coffee liqueur or to taste
1 handful of chopped roasted pistachios to be rolled in
Pit the plums. If they are too hard, soak them for several minutes in hot water, then drain the water.
Put the plums in a chopper. Add the other ingredients and blend them.
Shape the balls. Roll them in pistachios*.
*Optionally, you can roast for a short time the pistachios in a dry dish. Several seconds before take them off the oven, add 1 tablespoon of agave syrup and stir.