In a large bowl, combine flour, baking powder, and salt. Stir in oil, milk, and egg. Allow batter to sit for a few minutes.
Spray skillet or griddle with non stick cooking spray. Add about 1/2 cup of batter per pancake. Watch as bubbles form, and then swirl in cinnamon filling (see recipe below). Flip and cook for another 2-3 minutes.
For the Cinnamon Filling
In a medium bowl, combine all ingredients. Place into a plastic baggie, and snip off the corner.
For the Cream Cheese Glaze
In a small bowl, combine all ingredients. Drizzle over warm pancakes.