In a food processor add the pistachios and sugar and blend until you get a fine flour-like texture.
Step 3
Add the diced soft butter and mix until you get a creamy paste.
Step 4
Add the eggs one at a time into the food processor, add milk and vanilla.
Step 5
Finally, add the flour and baking powder.
Step 6
Pour the mixture into a previously greased mould dusted with flour and bake for 50 minutes, until a toothpick comes out clean when inserted in the centre.