Bring the water to a low boil in a small pot.
Slowly stir in the polenta grits.
Season with salt, then stir in the cinnamon and vanilla until combined.
Gently simmer on low heat for 5 minutes, stirring occasionally.
Stir in the oat milk and maple syrup, then remove from heat and cover for 2 minutes.
Stir once more, then spoon the polenta into a bowl, and top with fruit, almond butter, hemp hearts, and maple syrup, if using.