Combine and mix ingredients. Store in an airtight container.
Mix Milk, Egg, and Vanilla until well mixed. Whisk in melted butter and then pour into a mixing bowl with pancake mix. Mix well.
Set a large skillet or griddle over medium heat. Once it’s hot enough for a few droplets of water to dance on the top, add a tablespoon of butter. Once the butter melts, pour 1/3 cup of pancake batter onto the skillet to form a pancake.
Once bubbles form on the top and the edges of the pancake look slightly drier than the middle, flip the pancake. You should cook the pancake for about 3 minutes on the first side and 1 to 2 minutes after flipping. The pancakes should be lightly golden on both sides, with crispy edges.