A smoothie that tastes like a liquid latte macchiato – but without the milk foam and with the natural sweetness of a banana. The oat milk gives the drink a velvety texture, while the espresso provides the necessary kick. Perfect for breakfast skippers or as an afternoon boost when energy dips. No blender? No problem: A stick blender in a tall glass will do the trick.
And here’s what you need for the oat milk espresso smoothie
200 ml oat milk (unsweetened, for extra creaminess)
100 ml strong espresso (freshly brewed, still hot)
1 ripe banana (frozen, for better consistency)
15 ml maple syrup (or to taste)
1 pinch of vanilla extract (or the seeds from half a vanilla pod)
4 large ice cubes (approx. 3 cm edge length)
Key points
The trick lies in the temperature: The warm espresso gently melts the frozen banana just enough to make the smoothie creamy without the ice cubes melting too quickly. If the espresso is too hot, the drink becomes watery – too cold, and the banana won’t dissolve properly. Another tip: Shake the oat milk briefly beforehand so the natural fats and proteins distribute evenly. This gives the smoothie more body. And if your blender isn’t strong enough: Purée the banana before freezing, then freeze it – this avoids chunky bits.
Variations
- Matcha oat smoothie — Replace the espresso with 1 tsp matcha powder mixed with 50 ml hot water. The matcha adds a subtle bitterness and grassy note that pairs well with the banana’s sweetness. For a milder flavour, use only ½ tsp matcha.
- Chocolate oat espresso — Add 1 tsp unsweetened cocoa powder or 10 g dark chocolate (min. 70 %). The chocolate melts in the warm espresso and gives the smoothie a mocha-like depth. For extra creaminess, stir in 1 tbsp Greek yogurt.
- Protein boost — Add 1 scoop vanilla protein powder or 1 tbsp almond butter. This makes the smoothie more filling and adds a nutty note. Important: Slightly increase the liquid volume as the powder or butter thickens the mixture.
Frequently asked questions
Can I use other milk alternatives?
Yes, but the texture will change. Almond milk makes the smoothie thinner, while soy milk or pea protein milk adds more protein and makes it creamier. Coconut milk gives an exotic note, but beware: it can dominate the flavour.
Why isn’t my smoothie creamy?
There are three possible reasons: 1. The banana wasn’t frozen. 2. The ice cubes were too small or too many. 3. The blender wasn’t strong enough. Tip: Purée the banana before freezing – this saves time and guarantees a smooth consistency.
Can I prepare the smoothie in advance?
Yes, but not for too long. The smoothie keeps in the fridge for about 4–6 hours, but will thin out over time as the banana softens further. Better: Prepare all ingredients (except ice) beforehand and blend just before serving.
What can I use instead of maple syrup?
Honey, agave syrup or date syrup work just as well. For a less sweet option, try 1 tsp erythritol or xylitol – but be careful: these sweeteners don’t dissolve as well in cold liquids.
