Preheat the oven to 425℉. Grease a 13x18 pan and set aside.
Mix the nut milk and the lemon juice or ACV together in a small bowl/measuring cup. Set aside for about 5 minutes - this will make the vegan buttermilk.
In a large bowl, sift the flour, baking powder and salt. The sifting really helps to make the pancakes fluffy.
Add the sugar, vanilla extract, melted butter/oil, buttermilk mixture into the dry ingredients and using a spatula, gently mix the batter until JUST combined. It's okay (and normal) to have some lumps. Let the batter sit for at least 5 minutes to allow the ingredients to fully incorporate and absorb well together.
Pour into your 13x18 sheet pan and add your desired toppings (fruit, chocolate chips, etc.).
Bake for 15-18 minutes until golden brown.
Remove, allow to cool for at least 15 minutes and then you can slice into the pancakes.
Slice into 12 slices. Serve pancakes hot and drizzle with maple syrup on top and more of your favorite toppings. Enjoy!
Notes
Refrigerator: Store cooled sheet pan pancakes in an airtight container in the refrigerator for up to 4 days.
Freezer: Freeze the pancake slices in a freezer bag or airtight container with parchment paper between the layers for up to 2 months.
To reheat: Warm in the microwave or reheat in a toaster oven until heated through.