Preheat your oven to 450°F (232°C) and place the baking dish in the oven to allow it to heat with the oven.
In a mixing bowl, whisk together the flour, baking powder, salt, and sugar until well combined.
Gradually add in the milk, stirring until a thick dough forms.
Remove the hot baking dish from the oven and pour the melted butter into the pan, making sure it coats the bottom evenly.
Spoon the biscuit dough over the melted butter, spacing them out evenly. The butter will surround the biscuits.
Bake in the hot oven for 20 to 25 minutes, or until the tops are golden brown and the biscuits are cooked through.
Remove the biscuits from the oven and let them cool slightly before serving.
For added flavor, consider mixing in herbs such as chives or cheddar cheese to the biscuit dough.
Serve warm, and for a sweeter option, drizzle with honey or syrup.
Store leftovers in an airtight container at room temperature for up to 2 days, or freeze for later use.