Gather your ingredients: Peel the banana, measure your almond milk, and have your peanut butter, strawberries, and ice cubes on standby.
In your blender, combine the banana, almond milk, peanut butter, frozen strawberries, and ice cubes.
Start your blender on low speed, gradually increasing to high. Blend until smooth. If too thick, add more almond milk.
Taste your smoothie. If you prefer it sweeter, add honey or maple syrup as desired.
Pour the smoothie into a glass. Optionally, top with extra peanut butter or fresh strawberries.