✓ Preheat oven to 150°C (300°F); this low temperature gently melts chocolate without scorching.

✓ Chop chocolate into uniform 1‑cm pieces; this ensures even melting and prevents grainy texture.

✓ Place chocolate in a heat‑proof bowl over a saucepan of simmering water (double boiler); stir until fully liquid and glossy (do not let steam touch the chocolate).

✓ Remove bowl from heat, let chocolate cool to about 30°C (86°F); this prevents premature setting when poured.

✓ Lightly spray silicone hemisphere mold with neutral‑flavored oil; this aids release without adding flavor (Do not over‑oil – excess can cause surface sheen).

✓ Pour a thin layer of melted chocolate into each mold cavity, rotating to coat all sides; stop when the coating is about 2 mm thick (visual cue: smooth, even sheen).

✓ Place molds on a baking sheet and refrigerate for 10 minutes; the chocolate should firm enough to hold shape (do not freeze – frost can cause cracking).

✓ Repeat the coating process once more to build a 4‑mm wall; this creates a sturdy shell that won’t crumble under impact.

✓ Return molds to refrigerator for an additional 15 minutes, allowing the shell to fully set (visual cue: chocolate feels firm to the touch).

✓ While shells set, prepare candy filling by chopping larger pieces into bite‑size bits; mix with a handful of sprinkles for added sparkle.

✓ Remove solid chocolate shells from the mold by gently flexing the silicone; the dome should release cleanly (if resistance occurs, warm the mold briefly with warm hands).

✓ Using a small spoon, fill the center of each dome with the prepared candy mixture, leaving a 1‑cm border of chocolate untouched (visual cue: filling level just below rim).

✓ Seal each dome by drizzling a thin stream of melted chocolate over the opening; smooth with a spatula for an even seal.

✓ Allow sealed cakes to chill for 5 minutes, then place on a sturdy surface.

✓ Lightly tap the top of each dome with the mallet until a crisp crack appears; listen for a clean “snap” (Do not over‑smash – the shell must stay intact around the edges).

✓ Dust the cracked surface with additional sprinkles or a pinch of edible gold dust for visual flair.

✓ Arrange cakes on a platter, allowing guests to admire the shattered interior before digging in.

✓ Serve at room temperature; the chocolate will soften slightly, enhancing the contrast between crisp shell and gooey filling.