Put the eggs, vanilla, oil and milk in a blender. Whiz for a few seconds, until you get a smooth paste. Add the flour and baking powder then then pulse for a few more seconds.
Add the raspberries and whiz again for a few seconds.
Add more milk, if needed – you should have a thick, but pourable batter.
Heat the waffle maker. Once it’s hot, spoon in the batter, then seal.
Following the machine instructions, cook the waffles for about 5 minutes - they should be golden and crispy. You should be able to get 3 or 4 waffles from the mixture (depending on the size of your machine).
Serve the waffles with raspberry jam or compote and a few raspberry pieces.