Quick Recipe Version (TL;DR)
Quick Ingredients
- 1 medium banana (about 120 g), preferably frozen in slices
- 2 tablespoons creamy peanut butter (32 g)
- 1 tablespoon unsweetened cocoa powder (5 g)
- 1/3 cup old-fashioned rolled oats (30 g)
- 3/4 cup milk (180 ml), cold (about 40°F / 4°C)
- 1/2 cup plain Greek yogurt (120 g)
- 1 scoop chocolate or vanilla protein powder (about 25–30 g), optional
- 1/2 teaspoon vanilla extract
- 1 teaspoon honey or maple syrup (7 g), optional
- 1 pinch fine salt
- 4 ice cubes (about 80 g), only if using a fresh (not frozen) banana
Do This
- 1. Add milk and yogurt to a blender.
- 2. Add banana, peanut butter, cocoa, oats, vanilla, salt, and protein powder (if using).
- 3. Blend on high for 30 seconds, then pause and scrape down if needed.
- 4. Blend again for 30–60 seconds until thick and completely smooth.
- 5. Taste; add honey/maple syrup if you want it sweeter, then blend 10 seconds.
- 6. Pour into a tall glass and serve immediately (or chill 10 minutes for extra thickness).
Why You’ll Love This Recipe
- Tastes like a chocolate-peanut-butter dessert, but it’s filling enough for breakfast.
- Thick, spoonable texture thanks to oats, Greek yogurt, and a frozen banana.
- Easy to customize: add protein powder, change the milk, or sneak in extras like chia.
- One blender, five minutes, and you’re done.
Grocery List
- Produce: 1 medium banana
- Dairy: milk (any kind), plain Greek yogurt
- Pantry: creamy peanut butter, unsweetened cocoa powder, old-fashioned rolled oats, vanilla extract, fine salt, honey or maple syrup (optional), protein powder (optional)
Full Ingredients
Base (for thickness and creaminess)
- 3/4 cup milk (180 ml), cold (about 40°F / 4°C)
- 1/2 cup plain Greek yogurt (120 g)
- 1 medium banana (about 120 g), sliced and frozen for best thickness
Flavor and staying power
- 2 tablespoons creamy peanut butter (32 g)
- 1 tablespoon unsweetened cocoa powder (5 g)
- 1/3 cup old-fashioned rolled oats (30 g)
- 1/2 teaspoon vanilla extract
- 1 pinch fine salt
Optional boosts
- 1 scoop chocolate or vanilla protein powder (about 25–30 g)
- 1 teaspoon honey or maple syrup (7 g), if you prefer it sweeter
- 4 ice cubes (about 80 g), only if your banana is not frozen
Optional toppings (nice for a “dessert” vibe)
- 1 teaspoon cocoa powder (for dusting)
- 1 teaspoon peanut butter (warmed 10–15 seconds to drizzle)
- 1 tablespoon rolled oats
- 2–3 banana slices
Step-by-Step Instructions
Step 1: Freeze the banana (best texture)
For the thickest, milkshake-like smoothie, slice 1 medium banana and freeze until solid, at least 4 hours (or overnight). If you’re in a hurry and your banana is fresh, you can still make the smoothie; just plan to add 4 ice cubes to thicken it.
Step 2: Add liquids to the blender first
Pour 3/4 cup cold milk (180 ml) and add 1/2 cup Greek yogurt (120 g) to the blender. Starting with liquids helps the blades catch and blend smoothly, especially in smaller blenders.
Step 3: Add the thick ingredients and flavorings
Add the frozen banana slices, 2 tablespoons peanut butter (32 g), 1 tablespoon cocoa powder (5 g), 1/3 cup rolled oats (30 g), 1/2 teaspoon vanilla, and a pinch of salt. If using protein powder, add 1 scoop (25–30 g) now. If your banana is not frozen, add 4 ice cubes (about 80 g).
Step 4: Blend until completely smooth and thick
Blend on high for 30 seconds. Stop, then scrape down the sides if you see cocoa or oats sticking. Blend again for 30–60 seconds, or until the smoothie is fully smooth and evenly chocolatey with no oat bits.
Step 5: Adjust sweetness and consistency
Taste the smoothie. If you want it sweeter (especially if your banana wasn’t very ripe), add 1 teaspoon honey or maple syrup (7 g) and blend for 10 seconds.
For a thicker smoothie, add a few more ice cubes (about 40 g) or another 1/4 banana (about 30 g) and blend again. For a thinner smoothie, add 2 tablespoons milk (30 ml) at a time and blend briefly.
Step 6: Serve like dessert (optional toppings)
Pour into a tall glass. If you’d like, dust lightly with cocoa powder, drizzle with a little warmed peanut butter, and sprinkle on a few oats. Serve immediately while it’s cold and thick.
Pro Tips
- Frozen banana is the secret. It makes the smoothie thick and creamy without needing much ice, which can water down the flavor.
- Blend longer than you think you need. Oats and cocoa smooth out best with a full 60–90 seconds of blending (with a quick scrape-down halfway).
- Add a pinch of salt. It intensifies the chocolate flavor and makes the peanut butter taste richer.
- For extra dessert vibes: warm 1 teaspoon peanut butter for 10–15 seconds and drizzle it inside the glass before pouring.
- No protein powder? This is still filling thanks to Greek yogurt, peanut butter, and oats.
Variations
- Mocha breakfast shake: Add 1 teaspoon instant espresso powder (2 g) or 2 tablespoons chilled strong coffee (30 ml). Keep everything else the same.
- PB&J chocolate smoothie: Add 1/2 cup frozen mixed berries (70 g). You may need an extra 2–4 tablespoons milk (30–60 ml) to keep it blendable.
- High-fiber upgrade: Add 1 tablespoon chia seeds (12 g). Let the smoothie sit 5 minutes to thicken further, then stir and drink.
Storage & Make-Ahead
This smoothie is best right after blending. If you need to store it, pour it into a sealed jar and refrigerate for up to 24 hours. The oats will continue to absorb liquid and the smoothie will thicken; before drinking, stir or shake vigorously. If it’s too thick, add a splash of milk (1–2 tablespoons / 15–30 ml) and shake again.
Make-ahead tip: build “smoothie packs” by freezing banana slices in individual bags. In the morning, dump the frozen banana into the blender with the remaining ingredients.
Nutrition (per serving)
Approximate, for 1 large smoothie made with 2% milk, plain Greek yogurt, and 1 scoop protein powder (no honey): 520 calories, 38 g protein, 55 g carbs, 18 g fat, 10 g fiber, 20 g sugar, 320 mg sodium. Values will vary by brand and milk/protein powder used.
