Method

• Combine glutinous rice flour and baking powder in a large bowl, mixing well.
• Heat milk, sugar, vanilla extract, and salt in a saucepan over medium-high heat until almost boiling.
• Remove from heat, add cold butter, and let cool for 10 minutes.
• Beat large egg in a separate bowl, then slowly pour into the cooled milk mixture while whisking continuously.
• Pour the wet mixture into the dry ingredients and mix until a thick paste forms.
• Preheat waffle iron, spray with oil, scoop ⅔ cup of batter, and cook until golden brown.
• Use a chopstick to slide the waffles out for safe removal.