Pistachio, Basil & Lemon Stuffing

Melt the butter in a saucepan and add the onion. Saute for a few minutes over a medium heat until the onion softens and turns golden. Remove from heat and let cool.
Grind the pistachios to a fine crumb. Transfer to a mixing bowl and stir in the basil and lemon zest.
Pour the butter and onion into the pistachio mixture and stir until it comes together. Shape into a ball and stuff into your bird. Roast the bird as normal and then extract the stuffing from the cavity. If cooking it separately, scoop the mixture into an oven proof dish and bake at 350 for 20 minutes.