1. Using a blender, grind the savory biscuits into powder.
If a blender is not available, place the crackers in a freezer bag and crush them with a rolling pin.
2. Melt the butter and mix it with the crushed biscuits.
3. Place a sheet of parchment paper on a baking sheet. Grease 4 pastry rings and place them on the baking sheet. Fill the bottom of the pastry rings with the previously obtained dough. Press the base firmly before refrigerating.
4. In a bowl, mix the cream cheese, Greek yogurt, cooked salmon, lemon juice. Finely chop the dill and add salt, pepper, and berries.
5. Arrange a layer of thin cucumber slices, then the mixture in the pastry rings. Smooth with a spoon and refrigerate for at least 3 hours.
6. When ready to serve, carefully remove the mini cheesecakes from the pastry rings. Decorate them with a slice of smoked salmon and a few sprigs of dill.