Prep your pan. Line a 12-cup muffin tin with paper liners. For mini cups, use a 24-cup mini tin.
Melt the chocolate. In a heatproof bowl, microwave chocolate and coconut oil in 20–30 second bursts, stirring between each, until smooth. Or use a double boiler if you're fancy.
Mix the nut layer. In a small bowl, stir nut/seed butter with 1 tbsp maple or honey, a pinch of salt, and half the vanilla. If very thick, warm it 10–15 seconds so it spreads easily.
Upgrade your cranberry sauce. Combine cranberry sauce with remaining maple/honey, orange zest, chia (if using), and the rest of the vanilla. Taste. Add sweetener if your cranberries are extra tart.
Build the base. Spoon about 1–1.5 tsp melted chocolate into each liner. Tilt the tin so the chocolate climbs the sides slightly. Chill 5 minutes to set.
Add the nut layer. Dollop 1 tsp nut mixture into each cup and gently flatten so it doesn't touch the edges (leaves room for chocolate to seal).
Add the cranberry layer. Top with 1–1.5 tsp cranberry mixture and smooth lightly. Keep it centered for clean sides.
Seal with chocolate. Spoon 1–2 tsp melted chocolate over each cup, ensuring the layers are covered to the edges. Tap the tin on the counter to level.
Finish and chill. Sprinkle flaky salt. Refrigerate 20–30 minutes until firm. Try not to “quality control” half the batch. Or do.
Serve. Peel off liners and bask in your own brilliance. Store as directed below.