To make the syrup, add the banana, brown sugar, and water to a small saucepan over medium heat.
1 large very ripe banana, ½ cup brown sugar, 1 cup water
Bring to a simmer, and let it cook for 7-8 minutes until thickened and bubbly.
Stir in the cinnamon, vanilla extract, and a pinch of salt.
½ tsp cinnamon, 1 tsp vanilla extract, pinch of salt
Transfer the syrup to a blender or food processor. Blend until smooth. Or, pour the syrup through a fine mesh sieve to strain out any lumps.
Brew the espresso. Add 3 tablespoons of syrup to the espresso and stir.
2 shots of espresso
Heat the milk and pour ½ to ¾ cup into each glass.
2 cups milk of choice
Froth the remaining milk. Then, spoon a layer of frothed milk over the top of each latte.
Finish with a sprinkle of ground cinnamon.