Breakfast

Banana Bread Mug Oats with Egg

Name: Banana Bread Mug Oats with Egg
Prep time: 6 min
Total time: 6 min
Yield: 1 serving
Ingredients: 50 g Rolled oats; 1 medium, about 100 g Banana; 1 large, about 55 g Egg; 100 ml Whole milk; 15 g, broken up Walnuts; Half a teaspoon Ground cinnamon; Half a teaspoon Baking powder; A pinch Salt

Mashed banana, an egg, oats, cinnamon and walnuts, stirred in a mug and microwaved until it rises and sets. Eats like a warm slice of banana bread.

Calories: 529kcal
Protein: 20g
Fat: 23g
Carbs: 60g

Per serving, makes 1. 6 minutes of work. Published 8 September 2026.

Allergens

Gluten
Milk
Eggs
Tree nuts

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.

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 oats50 g
Dry weight.
Banana1 medium, about 100 g
Very ripe. Brown spots are the sweetness. Peeled weight. A medium banana is about 100 g without the skin.
Egg1 large, about 55 g
Whole milk100 ml
Walnuts15 g, broken up
Ground cinnamonHalf a teaspoon
Baking powderHalf a teaspoon
SaltA pinch

Method

Mash the banana in a large mug with a fork, then beat in the egg and the milk.
Stir in the oats, cinnamon, baking powder, salt and most of the walnuts. Scatter the rest on top.
Microwave at 800 W for two and a half minutes, until it has risen and the top is set. Stand for a minute before eating from the mug or turning it out.

Worth knowing

It rises to the rim and sinks back, which is normal. If the centre is still wet after two and a half minutes, give it another thirty seconds rather than another minute.
Most of the calories are banana, egg and walnut rather than oats. Leave the walnuts out and it drops by about 100 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.