Ingredients
(A)
1 cup (125g) Plain flour
1½ tsp Baking Powder
2 tbsp Sugar
 ½ tsp Salt

 (B)
1 cup (240ml) milk 1 egg, lightly beaten
1 tbsp melted butter or vegetable oil
½ tsp vanilla extract (optional)

Fillings: red bean paste (or other fillings of your choice)

Preparation
Combine (A) in a mixing bowl. Mix well.
Combine (B) in a measuring cup, mix well. Pour (B) into (A).
Hand whisk until mixture well combined.
Preheat pan
Brush both side of the pan with butter 
Add batter into the Taiyaki mold, add 1 tsp of filling in the center, cover with batter.
Fill up every corner of the mold.
Cover the pan immediately and flip to the other side.
cook over medium low heat for about 2 minutes each side or until cook (open the pan in between to check if the color has turned golden brown)