In a large bowl, whisk 2 cups of buttermilk, 2 large eggs, 2 teaspoons of vanilla extract and 1/3 cup of vegetable oil until combined
In a separate bowl or mesh sifter, combine 2 cups of all-purpose flour, 1/4 cup of brown sugar, 2 teaspoons of baking powder, 1/2 teaspoon of baking soda, 1/4 teaspoon of salt, 1 teaspoon of ground cinnamon and 1/2 teaspoon of ground nutmeg and add to the buttermilk mixture
Mix until just combined (do not over mix this batter! A few lumps are totally fine!)
Place a griddle or flat skillet over medium heat and let it warm for 3-4 minutes
Grease the pan with butter and drop 1/2 cup of batter leaving several inches between each pancake
Cook until the edges are set and the top of the pancake is full of bubbles
Carefully flip the pancakes and cook until the underside is golden brown
Repeat until all of the batter has been cooked