In a large bowl, add the flour, baking powder, and salt together and whisk until well combined.
Make a small well in the middle of the dry ingredients and add in the milk, apple cider vinegar, maple syrup, melted butter, and vanilla, stirring gently (using a spatula) until just combined. DO NOT OVERMIX! NOTE: If the batter is way too thick and hard to stir, add additional milk, 1 Tbsp at a time until more smooth, yet still thick enough.
Let the batter sit for 10 minutes so that it rests and "activates" the ingredients for a fluffier texture.
Add 1 Tbsp vegan butter to a heated skillet over medium-high heat and wait until fully melted. Pour 1/3 cup of pancake batter unto the surface of the skillet and cook for about 1-2 minutes (until batter begins to bubble) and gently flip pancake to it’s opposite side, cooking another 1-2 minutes. NOTE: Be sure to gently press down on pancake to ensure that center cooks through.
Once cooked and lightly brown on both sides, remove pancake from heat and repeat steps until all batter is used.
To serve, stack pancakes onto one another and top with fresh berries and lightly drizzle with maple syrup, if desired.
Bon Appetit!