Preheat your waffle iron to medium-high heat.
In a large bowl, whisk together brown rice flour, starch, almond flour, cornstarch, baking powder, xanthan gum, and salt.
In a separate bowl, mix maple syrup, eggs, milk, melted coconut oil, and vanilla extract until combined.
Gradually pour the wet ingredients into the dry ingredients, stirring gently until just combined (do not overmix).
Let the batter rest for 10 minutes to allow the flour to absorb moisture.
Lightly grease the waffle iron, then pour about ¼ cup of batter into the center.
Close the waffle iron and cook for 8-10 minutes, or until golden brown and crispy.
Remove the waffle and repeat with the remaining batter.
Serve warm with your favorite toppings, such as fresh berries, syrup, or whipped cream.