In a large bowl, whisk together flour, sugar, baking powder, nutmeg, and cinnamon.
In another bowl, mix eggnog, milk, and melted butter until smooth.
Pour wet ingredients into dry ingredients and stir gently until just combined; some lumps are okay.
Preheat a nonstick skillet over medium heat and lightly grease with butter.
Pour 1/2 cup of batter for each pancake onto the skillet. Cook for about 2 minutes or until bubbles form on the surface; flip and cook for an additional minute until golden brown.
Serve warm with maple syrup or whipped cream.