In a large bowl, whisk together the flour, baking powder, sugar, and salt.
In a separate bowl, beat the milk, egg, and melted butter until combined.
Pour the wet mixture into the dry ingredients and stir gently until just mixed. A few small lumps are fine.
Heat a skillet over medium heat and lightly grease it with butter or oil.
Pour 1/4 cup of batter for each pancake onto the skillet. Immediately place 3 to 4 thin apple slices on top of the batter and sprinkle lightly with cinnamon.
Cook until bubbles form on the surface, then flip and cook the other side until golden.
Repeat with the remaining batter and apple slices.
Warm the raspberry jam in a small bowl for a few seconds in the microwave, then drizzle a small amount over each pancake to create the vampire bite effect.