Coconut-Buttermilk Pound Cake

INGREDIENTS

1 1/2 sticks

unsalted butter, room temperature, plus more for pan

2 cups

all-purpose flour (spooned and leveled), plus more for pan

1 1/2 tsp

baking powder

1/2 tsp

fine salt

1 cup

granulated sugar

1 tsp

pure vanilla extract

large eggs

1 cup

plus 2 tablespoons buttermilk, divided

1 1/2 cups

sweetened shredded coconut, toasted, divided

1 cup

confectioners' sugar