Preheat your oven to 160 degrees Celsius.
In a small blender, combine the butter, anchovy fillets, crushed garlic, basil leaves, and a pinch of dried chilli flakes. Process these ingredients until smooth.
Blanch the asparagus in boiling water for about 3 minutes. This quick cooking method brightens their color and enhances their flavor.
Drain the asparagus and arrange them on a small oven tray. Dot the spears generously with the anchovy butter.
Roast the asparagus in the preheated oven for about 3 minutes. You’ll know they’re ready when they’re tender yet still have a slight crunch.
Carefully arrange the roasted asparagus on a serving plate. Drizzle any melted butter from the roasting dish over the top.
Grate Parmesan cheese over the warm asparagus to create a delightful topping.
Serve warm with some crusty bread.
