Step 1: Preheat your oven to 400°F (200°C) and line a small baking sheet or oven-safe dish with parchment paper.
Step 2: Wash the figs gently and pat them dry. Trim the stems and cut each fig in half lengthwise.
Step 3: Place the figs cut-side up on the prepared baking sheet. Drizzle each half generously with honey.
Step 4: Strip the leaves from two of the thyme sprigs and sprinkle them over the figs. Place the remaining sprigs on the tray for extra aroma.
Step 5: Roast the figs for 12-15 minutes, or until they are soft and the honey is bubbling and slightly caramelized.
Step 6: While the figs roast, place a dollop of mascarpone cheese on four small serving plates or one large platter.
Step 7: Once the figs are done, carefully place them on top of the mascarpone. Drizzle any remaining warm honey syrup from the pan over the top.
Step 8: Finish with a sprinkle of flaky sea salt and toasted walnuts if desired. Serve immediately while warm.