01 -
Preheat oven to 230°C. Place the butter in a 22 cm × 22 cm baking dish and set in the oven until fully melted, then remove carefully.
02 -
In a large bowl, whisk together flour, baking powder, sugar, and salt until homogeneous.
03 -
Pour buttermilk into the dry ingredients and gently stir until a soft, sticky dough forms. Do not over-mix.
04 -
Add diced ham and shredded cheddar to the dough. Mix just until evenly distributed.
05 -
Transfer dough directly into the baking dish over the melted butter, spreading evenly with a spatula so butter rises around the sides.
06 -
Using a sharp knife, lightly score the dough surface into nine equal squares to promote even baking.
07 -
Bake on the middle rack for 20–25 minutes, until the top is golden brown and the edges are crisp.
08 -
Allow to cool for several minutes, then cut along the scored lines and serve the biscuits warm.