Mentega Mochi

Bahan-bahan (24 porsi)

• ½ cup unsalted butter ((1 stick; plus more for greasing the pan))
• 1 lb mochiko (glutinous rice flour/sweet rice flour)
• 1½ tsp baking powder ((use 1 tsp for a slightly less fluffy version))
• ½ tsp Diamond Crystal kosher salt
• 4 large eggs (50 g w/o shell) ((at room temperature))
• 2 cups sugar
• 1 (13½-oz) can unsweetened coconut milk ((full fat; see Notes))
• 1 (12-oz) can evaporated milk
• 2 tsp pure vanilla extract