The Ultimate Protein Smoothie
Thick, creamy, and packed with protein, this smoothie blends banana, peanut butter, and oats into a deliciously satisfying drink. Ready in under 5 minutes, it's the perfect post-workout refuel or a quick grab-and-go breakfast that tastes like a milkshake.
For 1 serving
- prep · ~2 min
Gather and prep all ingredients.
Peel the banana if not already frozen. Measure out milk, peanut butter, oats, protein powder, and honey.
TIPA frozen banana is essential for a thick, creamy smoothie texture. Slice ripe bananas and freeze them flat on a tray, then transfer to a bag. - mix · ~1 min
Blend until smooth.
1.Add the milk to the blender first to prevent sticking.2.Add the frozen banana, peanut butter, rolled oats, protein powder, honey, and a pinch of cinnamon.3.Blend on high for 30-45 seconds until completely smooth and creamy.TIPIf the smoothie is too thick, add a splash more milk and pulse briefly. If too thin, add a couple of ice cubes or a few more oats. - serve
Pour into a glass and serve immediately.
Pour the smoothie into a tall glass. Sprinkle a tiny extra pinch of cinnamon on top if desired. Drink straight away while cold.
What to keep in mind.
7 tips from the recipe — small details that make a real difference to the final dish.
- 1Freeze banana slices flat on a baking sheet before bagging to prevent a giant frozen clump.
- 2Add liquid first to the blender to help the blades move freely and avoid a stuck base.
- 3If using natural peanut butter, stir it well before measuring to incorporate the oil.
- 4For a colder smoothie without extra ice, use frozen banana and chilled milk only.
- 5Let the smoothie rest for 30 seconds after blending to allow the oats to fully soften.
- 6Rinse the blender immediately after pouring to prevent dried-on protein powder residue.
- 7Make ahead: prep a bag with frozen banana, oats, and protein powder; just add milk and peanut butter when blending.
Adapt it for your goals.
Low-Oil / Lower-Fat
Swap the peanut butter for 2 tablespoons of powdered peanut butter (reconstituted with water) and almond milk to slash fat and calories while keeping protein and peanut flavour.
Vegan & Dairy FreeVegan & Dairy-Free
Use unsweetened almond or oat milk, a plant-based vanilla protein powder, and swap honey for maple syrup or agave. No other changes needed.
High Protein / Post WorkoutHigh-Protein / Post-Workout
Increase vanilla protein powder to 2 tablespoons (or a full scoop), and add 1 tablespoon of chia seeds or hemp hearts for extra protein and omega-3s.
Chocolate Covered BananaChocolate-Covered Banana
Replace the cinnamon with 1 tablespoon of unsweetened cocoa powder and add an extra teaspoon of honey or maple syrup for a chocolate-peanut butter twist.
Green Power SmoothieGreen Power Smoothie
Add a handful of fresh spinach or kale before blending. The banana and peanut butter mask the green taste completely, giving you extra vitamins and fibre.
Why this is on our healthy list.
High in Plant Protein
Peanut butter, oats, and protein powder deliver a solid protein boost, supporting muscle repair after workouts and keeping you full longer.
Natural Energy from Oats
Rolled oats provide complex carbohydrates and soluble fibre (beta-glucan), which helps sustain energy levels and supports heart health.
Potassium-Rich Banana
Bananas are an excellent source of potassium, an essential mineral for muscle function and fluid balance, making this smoothie ideal post-exercise.
Healthy Fats from Peanut Butter
Natural peanut butter supplies monounsaturated and polyunsaturated fats, which are beneficial for heart health when consumed in moderation.
Antioxidants from Cinnamon
A pinch of cinnamon adds anti-inflammatory antioxidants and may help regulate blood sugar levels after a meal.
Frequently asked questions
Yes, but the smoothie will be thinner and less creamy. To compensate, add 3-4 ice cubes to the blender along with the fresh banana.
