Preheat the oven to 425℉/218℃ and line your baking sheet with parchment paper.
Add the flour and baking powder to a large bowl and stir to combine. Then add the milk and vanilla and mix until combined, without overmixing.
Pour the pancake batter onto your baking sheet and spread it into an even layer. You may use a silicone spatula, or pick up the tray and rotate from side to side.
Top with any toppings you'd like, but don't press them down. Then bake for 10-12 minutes, until the pancakes are lightly golden, firm to the touch, and roughly doubled in thickness.
Remove the tray from the oven and let cool for a few minutes before transferring to a cutting board to slice and serve.
Notes
Weigh your flour for the most accurate results. Scooping from a bag often results in too much flour being used due to compacting the flour into the measuring cup.
If you do not have a kitchen scale, spoon the flour into your measuring cup and scrape off the top with a knife, but do not scoop from the bag.
Use fresh, active baking powder. Baking powder that has been opened and sitting in the pantry for several months can start to lose its effectiveness.
Do not over-mix your pancake batter. If there are a few lumps, that’s perfectly okay. Don’t be tempted to mix until perfectly smooth as this may alter the texture of your pancakes.
Leftovers will keep refrigerated for 3-4 days, or freeze them airtight for up to 3 months.