Whisk the flour blend, sugar, baking powder, salt, and xanthan gum together in a large bowl.
In a second bowl, whisk the eggs, melted butter or oil, milk, and vanilla.
Pour the wet mixture into the dry and stir until just combined — a few lumps are fine. Rest the batter for 15 minutes; it will thicken slightly.
Heat a griddle or skillet over medium heat (about 350°F) and grease it lightly.
Scoop about ¼ cup of batter per pancake. Cook until bubbles rise and pop across the top and the surface loses its shine, then flip and cook 1–2 minutes more, until golden.
Serve warm.
The 15-minute rest is worth it — the pancakes come out fluffier. Halve the recipe for a small batch.