Prep the bananas: Peel and slice the bananas. For a thicker shake, freeze the slices for at least 2 hours.
Fresh bananas work too; just add ice.
Load the blender: Add bananas, 1½ cups of milk, vanilla, ice (if using), and a pinch of salt to the blender jar.
Blend until smooth: Start low, then increase to high for 20–30 seconds. If it’s too thick, add more milk. If it’s too thin, add a few more banana slices or ice.
Taste and adjust: Sip a little.
If you want more sweetness, add honey or maple syrup in small amounts and blend again.
Serve immediately: Pour into chilled glasses. Dust with cinnamon or nutmeg if you like. Drink while cold and creamy.