In a medium bowl, whisk together flour, baking powder, baking soda, salt, cinnamon, nutmeg, and brown sugar.
In another bowl, whisk eggs, apple butter, milk, melted butter, and vanilla until smooth.
Gradually combine the wet and dry mixtures, stirring until just blended. Do not overmix—lumps are fine.
Preheat a nonstick griddle or pan over medium-low heat and lightly grease it.
Pour about 1/4 cup of batter for each pancake. Cook until small bubbles form on top, then flip and cook until golden brown on both sides.
Keep cooked pancakes warm on a baking sheet in a low oven while finishing the rest.
Serve hot with a dollop of apple butter, a drizzle of maple syrup, and perhaps a sprinkle of chopped nuts for crunch.