Unsalted butter and pure maple syrup (for serving)
RECIPE PREPARATION
Preheat oven to 400°. Toast coconut on a rimmed baking sheet until golden brown, about 2 minutes. Let cool.
Whisk flour, cornstarch, salt, baking powder, and baking soda in a large bowl. Whisk eggs, buttermilk, milk, oil, and sugar in a medium bowl. Whisk buttermilk mixture into dry ingredients (do not overmix). Mix in ¾ cup coconut; set aside remaining coconut.
Heat a waffle iron until very hot. Coat with nonstick spray. Working in batches, cook waffles until golden brown. Serve topped with butter, syrup, and reserved coconut.