Foryoueats: Butter Mochi

Ingredients

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