Breakfast

Peanut Butter Whey Porridge with Sliced Banana

Name: Peanut Butter Whey Porridge with Sliced Banana
Prep time: 8 min
Total time: 8 min
Yield: 1 serving
Ingredients: 55 g Rolled oats; About 300 ml Water; 1 medium, about 100 g Banana; 1 tbsp (15 g) Peanut butter; 1 scoop, about 30 g Whey protein isolate; A pinch Ground cinnamon; A pinch Salt

Porridge made on water with half a banana mashed in, whey and peanut butter stirred through and the other half sliced on top. 504 kcal.

Calories: 504kcal
Protein: 36g
Fat: 12g
Carbs: 60g

Per serving, makes 1. 8 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.

Ingredients

Rolled oats55 g
Dry weight.
WaterAbout 300 ml
Banana1 medium, about 100 g
Peeled weight. A medium banana is about 100 g without the skin.
Peanut butter1 tbsp (15 g)
The kind that is peanuts and salt. Sweetened spreads carry more carbohydrate.
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.
Ground cinnamonA pinch
SaltA pinch

Method

Simmer the oats in the water with the salt for four minutes, stirring now and then.
Mash half the banana with a fork and stir it in for the last minute, so it cooks into the oats.
Off the heat, stir in the whey and the peanut butter until smooth. Add a splash of water if it is too stiff to stir.
Slice the other half of the banana over the top and dust with cinnamon.

Worth knowing

Half the banana mashed in is what sweetens the bowl, so nothing else is added. All of it sliced on top instead and the porridge underneath eats a lot plainer.
A level tablespoon of peanut butter is 15 g. Heaped is nearer 25 g and another 60 kcal.

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.