In a small saucepan over low heat, whisk together the banana puree, maple syrup, ground cinnamon, ground nutmeg, and vanilla extract until warm and fragrant, about 1-2 minutes.

Pour the hot espresso into the saucepan with the spiced banana syrup mixture, whisking vigorously until fully incorporated and smooth. Strain through a fine-mesh sieve into your favorite mug if a silky texture is preferred.

Froth or steam the milk until hot and creamy with a thick layer of foam.

Pour the steamed milk into the mug over the banana espresso mixture, spooning foam on top. Dust with a extra pinch of cinnamon before serving.