Chocolate Mushroom cookies anyone?

Chocolate Mushroom recipe from Herb e-cooking school

1/2 cup butter 

1 cup firmly packed brown sugar
1 egg
1 tsp. vanilla
100g 70% dark chocolate melted and cooled
3/4 cup sour cream
10 button mushrooms, finely chopped
1/2 cup chopped roasted almonds
1 ¾ cups plain flour
¼ cup dark cocoa
1/2 tsp baking soda
Pinch salt

1. Cream butter and sugar until fluffy. Add egg, vanilla and beat thoroughly until combined. 
2. Stir in the melted chocolate and the sour cream then folding in the chopped mushrooms and the chopped almonds. 
3. Sift the flour, cocoa and the baking powder with the salt. Add the flour mix to the creamed mixture and mix well. 
4. Place tablespoons 5 cm apart on greased baking paper. 
5. Bake at 175C for 20 minutes until dry to touch.


I substituted walnuts for almonds and I halved the amount of sugar. It worked just fine.