Green mung bean cupcakes with palm sugar buttercream frosting

Ingredients

1) For Green mung bean Cupcakes :

• ½ cups butter
• ¾ cups sugar
• 2 large eggs
• 1 ¼ cups all purpose flour
• ¼ cups grounded green mung bean
• 1 tsp baking powder
• pinch of salt
• ½ cups milk

2) For Palm sugar butter cream frosting :

• ¼ cups palm sugar and more for garnish
• ¼ cups milk
• 1 pandan leaf
• ½ cups butter
• 1 ½ cups confectioner's sugar or more

3) For Green mung bean paste :

• 60 g peeled green mung bean
• 40 g sugar
• 1/8 teaspoon salt
• 1/3 cups coconut milk
• 1 pandan leaf