Gather all ingredients on the kitchen counter.
Peel the ripe banana and break it into smaller pieces.
Place the banana pieces into the blender.
Add 2 tablespoons of peanut butter to the blender.
Pour in 1 cup of almond milk.
Add 1 tablespoon of honey if desired.
Include 1/2 teaspoon of vanilla extract.
Optionally, add 1/4 cup of oats for thickness.
Add ice cubes to the blender.
Blend on high until smooth and creamy.