Breakfast

Coffee, Banana and Oat Protein Shake

Name: Coffee, Banana and Oat Protein Shake
Prep time: 5 min
Total time: 5 min
Yield: 1 serving
Ingredients: 2 shots (60 ml), cooled Espresso; 1 medium, about 100 g Banana; 40 g Rolled oats; 1 scoop, about 30 g Whey protein isolate; 250 ml Semi-skimmed milk; 1 tbsp (15 g) Peanut butter; A handful Ice

Espresso, banana, oats, milk and whey blended into a shake thick enough to hold a straw upright. A whole breakfast in a glass. 43 g of protein for 566 kcal.

Calories: 566kcal
Protein: 43g
Fat: 15g
Carbs: 63g

Per serving, makes 1. 5 minutes of work. Published 8 September 2026.

Allergens

Gluten
Milk
Peanuts

Oats count as a gluten cereal under UK labelling and ordinary oats are milled alongside wheat. Certified gluten-free oats are a separate ingredient here.
Most whey powders contain soya lecithin, which counts as soya. Check the tub.

Flags follow UK labelling rules and come from the ingredients as listed, not from any particular brand. Check the packet before cooking for somebody with an allergy.

Recipe in pictures

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Coffee, Banana and Oat Protein Shake, plated and ready to serve. — The finished recipe. Coffee, Banana and Oat Protein Shake

Ingredients 1 to 6 for coffee, banana and oat protein shake arranged separately on a dark worktop. — Ingredients 1 to 6. 2 shots (60 ml), cooled Espresso. 1 medium, about 100 g Banana (Frozen in chunks if you have planned ahead. It replaces the ice and makes it thicker. Peeled weight. A medium banana is about 100 g without the skin.). 40 g Rolled oats (Dry weight.). 1 scoop, about 30 g Whey protein isolate (Values for an unflavoured or lightly flavoured isolate. A concentrate or a blend carries more fat and carbohydrate at the same scoop.). 250 ml Semi-skimmed milk. 1 tbsp (15 g) Peanut butter (The kind that is peanuts and salt. Sweetened spreads carry more carbohydrate.)

Ingredients 7 to 7 for coffee, banana and oat protein shake arranged separately on a dark worktop. — Ingredients 7 to 7. A handful Ice

Coffee, Banana and Oat Protein Shake, preparation step 1: Blend the oats on their own for ten seconds first, until they are a coarse flour. Whole oats in a smoothie are chewy in the wrong way. — Step 1. Blend the oats on their own for ten seconds first, until they are a coarse flour. Whole oats in a smoothie are chewy in the wrong way.

Coffee, Banana and Oat Protein Shake, preparation step 2: Add the milk, coffee, whey, peanut butter and banana and blend for thirty to forty seconds until smooth. — Step 2. Add the milk, coffee, whey, peanut butter and banana and blend for thirty to forty seconds until smooth.

The finished coffee, banana and oat protein shake. — Step 3. Add the ice and blend again briefly. Drink within a few minutes; the oats keep thickening as they sit.

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Ingredients

Espresso2 shots (60 ml), cooled
Banana1 medium, about 100 g
Frozen in chunks if you have planned ahead. It replaces the ice and makes it thicker. Peeled weight. A medium banana is about 100 g without the skin.
Rolled oats40 g
Dry weight.
Whey protein isolate1 scoop, about 30 g
Values for an unflavoured or lightly flavoured isolate. A concentrate or a blend carries more fat and carbohydrate at the same scoop.
Semi-skimmed milk250 ml
Peanut butter1 tbsp (15 g)
The kind that is peanuts and salt. Sweetened spreads carry more carbohydrate.
IceA handful

Method

Blend the oats on their own for ten seconds first, until they are a coarse flour. Whole oats in a smoothie are chewy in the wrong way.
Add the milk, coffee, whey, peanut butter and banana and blend for thirty to forty seconds until smooth.
Add the ice and blend again briefly. Drink within a few minutes; the oats keep thickening as they sit.

Worth knowing

Over 500 kcal because it is porridge, coffee and a protein shake in one glass. The oats are 150 of it and the peanut butter 90, and both can go if you want a lighter version at about 320.
Blitzing the oats first is the trick. Ten seconds dry, then the liquid.

Other breakfast recipes that share ingredients with this one, or every breakfast between 450 and 600 calories a serving.

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Macros are calculated from the weights listed above using standard food composition values, and will shift with your own brands and measuring. Weigh what you can. This is a recipe, not dietary advice. The full health disclaimer is below.