Chocolate Chestnut Tea Cake

Chocolate Chestnut Tea Cakes 
(basic cake recipe adapted & modify slightly from cookpad) 

Ingredients: 
60g salted butter
35g coconut sugar
1 large egg, beaten
10g cocoa powder
40g Blue Jacket Cake Flour
1 tsp vanilla extract
1/2 tsp baking powder

Fillings (optional)

chestnut  

Method: 
1. Whisk the butter & sugar together till light & pale in colour.
2. Add in egg slowly & vanilla extract. Whisk till combined.
3. Sift in flour, cocoa & baking powder. Mix till combined.
4. Scoop some batter into mould, add in one chestnut & topped with more batter. 
5. Bake in a preheated oven @160C for 20mins