Crack your three eggs into a large mixing bowl and add the milk, maple syrup, salt, and cinnamon. This is where your flavor foundation lives. Grab a whisk—not a fork—and blend everything until completely smooth and uniform. You're looking for no streaks of egg white, no undissolved cinnamon clumps.
Here's the pro move: whisk for about 30-45 seconds longer than feels necessary. You're aerating the mixture slightly, which contributes to a fluffier interior once cooked. The salt dissolves into the liquid, seasoning every cell of bread that soaks it up.