Calories and protein in a bowl of oatmeal with banana
Also called porridge, oats with milk.
The short answer
1 bowl, about 350 g
390 kcal
14 g protein
Fat 11 g · carbs 61 g · fibre 5.5 g · Vegetarian
Portion: oats cooked in milk, half a banana and honey. Calculated from USDA FoodData Central
Cooking the oats in water instead of whole milk takes out more than the banana and honey put in.
What moves the number
- Milkabout 150 kcal
- Oatsabout 150 kcal
- Bananaabout 55 kcal
The recipe behind these numbers
Raw ingredient weights in one 1 bowl, scaled from the batch recipe in the Homekcal app’s dish table. Water, salt and spices add almost no energy but are listed so the recipe is complete. If your version has more of something, the numbers move with it.
| Ingredient | Weight | Calories | Protein |
|---|---|---|---|
| OatsUSDA: Cereals, oats, regular and quick, not fortified, dry | 40 g | 150 | 5.5 g |
| MilkUSDA: Milk, whole, 3.25% milkfat, with added vitamin D | 250 g | 150 | 8 g |
| BananaUSDA: Bananas, raw | 60 g | 55 | 0.5 g |
| HoneyUSDA: Honey | 10 g | 30 | 0 g |
What we could not match
Stand ins and assumptions in this recipe that a person still has to check.
- Half a medium banana is taken as 60 g peeled; a larger banana adds more.
- Oats are cooked in whole milk; cooking them in water takes out most of the milk's energy.
How this was worked out
This is the same dish the Homekcal app logs, from the same table. Each raw ingredient’s weight is multiplied by its per-100 g values in USDA FoodData Central, the batch is added up and divided by the cooked weight it makes. Calories are rounded to the nearest 10 and grams to the nearest gram, because a standard recipe is not your recipe. These are calculated values, not weighed or lab tested meals, and home versions vary a lot.
Source: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, 2026. fdc.nal.usda.gov. Public domain (CC0).
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