Warm vanilla-flavored corn atole is a soothing Mexican breakfast beverage. This vegetarian, family-friendly drink is a comforting, traditional way to start the morning.
In a medium saucepan over medium heat, combine 4 cups whole milk, 1 cup water, and 1 cinnamon stick. Stir occasionally and bring gently to a bare simmer.
While the milk mixture heats, dissolve 1.5 tbsp cornstarch in a few tbsp of cold water to make a smooth slurry.
Once the milk reaches a low simmer (small bubbles at the edge), remove the cinnamon stick. Lower the heat to medium-low and steadily whisk in the cornstarch slurry to prevent lumps.
Add 1.25 cups sugar and a pinch of salt, whisking continuously until fully dissolved.
Continue stirring over medium-low heat until the atole thickens enough to coat a spoon, about 6–8 minutes. Remove from heat, stir in 1.5 tsp vanilla extract, and serve hot.