Preheat your waffle iron. If your iron makes standard square waffles, prepare to cut them into sticks after cooking. If you have a stick-shaped iron, lightly grease it.
In a large bowl, whisk together the gluten-free flour blend, 2 tablespoons sugar, baking powder, salt, and 1 teaspoon cinnamon.
In a separate bowl, whisk together the milk, eggs, melted butter, and vanilla extract.
Pour the wet ingredients into the dry ingredients. Mix until just combined; do not overmix the batter. A few small lumps are acceptable.
Lightly spray the hot waffle iron plates with non-stick cooking spray to prevent sticking.
Pour the batter onto the iron according to your appliance’s instructions. Cook until golden brown and crisp, usually 4 to 6 minutes.
While the waffles cook, mix the 1/4 cup sugar and 2 tablespoons cinnamon in a shallow dish to create the coating mixture.
Immediately remove the hot waffle and, if necessary, cut it into three or four sticks.
While the waffle pieces are still hot and slightly steamy, toss them gently in the cinnamon sugar mixture until fully coated.
Repeat with the remaining batter. Serve immediately.
Notes
Use a gluten-free flour blend that already contains xanthan gum for the best texture.
For extra crispiness, let the finished sticks cool on a wire rack for a few minutes before coating.
If you prefer a glaze, mix 1/2 cup powdered sugar with 2 tablespoons milk and 1/4 teaspoon vanilla extract.