01 - Preheat the waffle iron following the manufacturer's instructions.
02 - In a large bowl, whisk together flour, brown sugar, baking powder, baking soda, salt, ginger, cinnamon, cloves, and nutmeg.
03 - In a separate bowl, beat eggs, then add milk, molasses, melted butter, and vanilla extract; whisk until combined.
04 - Pour wet mixture into dry ingredients and stir gently until just combined; small lumps are acceptable.
05 - Lightly grease the waffle iron with oil or nonstick spray.
06 - Pour 1/2 to 3/4 cup batter onto the preheated waffle iron and cook 3 to 5 minutes until golden and crisp.
07 - Place cooked waffles in a low oven set to 200°F (95°C) to keep warm while cooking remaining waffles.
08 - Serve waffles hot with warmed maple syrup and, if desired, whipped cream and toasted pecans.