1. Boil the hilopites in salty water for 7 minutes.
2. Place the basil, olive oil, walnuts, garlic and salt in a blender. Blend until thoroughly combined
3. Add arseniko Naxou and softened butter and blend for 5-10 additional seconds.
4. Just before serving, add 2 table-spoons of the hot water that you used to cook pasta tp the pesto.
5. Serve with hilopita pasta.