Gather all your ingredients to make the blending process smooth and efficient.
In your blender, combine the unsweetened vanilla almond milk, baby spinach (if using), cottage cheese or Greek yogurt, peanut butter, and cocoa powder. Blend on high until smooth.
Add the frozen banana chunks. Blend again until the banana is fully incorporated and the mixture is creamy.
Add the ice cubes to your blender. Blend again until you achieve your desired texture, adjusting with more ice or almond milk as needed.
Taste your smoothie. If you want it sweeter, you can add a touch of honey or maple syrup.
Pour your Chocolate Peanut Butter Banana Smoothie into a glass or mason jar and enjoy immediately!