In a large bowl, whisk together the wet ingredients – buttermilk, eggs, vanilla, sugar, and melted butter.
Whisk dry ingredients – flour, salt, baking powder, and cinnamon – into the wet ingredients until just combined; leaving a few small lumps is ok. Set it aside to let the batter rest for at least 5 minutes, this helps it thicken up to give you an extra fluffy pancake.
Melt the butter in a non-stick skillet over medium heat. Once melted, dollop ¼ cup of batter a few inches apart.
Once the first side is set on the edges, golden on the bottom, and starting to bubble on the top (about 3-5 minutes), flip to the other side and finish cooking for another 3-5 minutes until the second side is also golden brown.