Whisk together the flour, sugar, baking powder, and salt in a large mixing bowl.
In another bowl, whisk together the eggs, milk, oil, vanilla, and peanut butter till smooth.
Add to the dry ingredients and stir till barely combined.
Cook in a hot waffle iron and serve warm.
For syrup: Bring sugar and water to a full rolling bowl in a small saucepan.
Remove from heat and stir in peanut butter and vanilla.
Stir till peanut butter is melted and syrup is smooth.
Syrup thickens as it cools.