In a large mixing bowl, whisk together the gluten-free flour, baking powder, salt, cinnamon, and nutmeg until evenly combined.
Add the roasted pumpkin puree, maple syrup, eggs, milk, and melted coconut oil to the dry ingredients. Whisk everything together until the batter is smooth, slightly thickened, and no lumps remain. This helps the flavors meld and the batter relax.
Allow the batter to rest for 2-3 minutes; it will thicken slightly as the gluten-free flour absorbs moisture, ensuring fluffiness.
Preheat your waffle iron and lightly brush the plates with a little coconut oil to prevent sticking. Once hot, pour the batter into the grid, spreading evenly for consistent cooking.
Close the lid and cook until the waffles are golden brown and crisp around the edges, about 5-7 minutes. You can hear a gentle sizzling and smell warm spices as they cook.
Carefully open the waffle iron, use a fork or spatula to gently lift the crispy waffles free, and transfer them to a plate. Repeat with remaining batter.
Serve these warm, fragrant waffles immediately, topped with additional maple syrup, a sprinkle of cinnamon, or fresh fruit for extra flavor.