Baked Oats with Banana and Blueberries: Step-by-Step Instructions

Instructions

1. Heat the oven to 180 °C (160 °C fan, 350 °F) and grease two 250 ml ramekins with butter. Greasing matters more than it sounds: the banana sugars caramelise against the sides and will stick to bare ceramic.
2. Tip the oats into a blender on their own and blitz for 20 to 30 seconds, until they look like coarse wholemeal flour with a few larger flecks left. This is the step that turns porridge into cake, so do not skip it or shorten it.
3. Add the bananas, eggs, milk, maple syrup, baking powder, vanilla, cinnamon and salt to the blender with the ground oats. Break the bananas into chunks first so the blades catch them straight away.
4. Blend for 30 to 45 seconds, until smooth and pourable, like a thick pancake batter. Stop as soon as it is even; over-blending warms the mixture and starts the baking powder working before it reaches the oven.
5. Let the batter stand for 5 minutes. The ground oats drink up some of the milk in that time, which is why the finished texture is tender rather than wet in the middle.
6. Divide the batter between the two ramekins, filling them no more than three-quarters full. They rise by about a third in the oven and will spill over if you fill them to the rim.
7. Scatter the blueberries over the top and press a few of them lightly into the surface. Leaving most of them sitting on top keeps them from sinking to the bottom in a single layer, and the flaked almonds, if using, go on last.
8. Bake for 25 minutes, until the tops are domed and golden and the centre springs back when pressed. A skewer should come out with a little moisture but no raw batter.
9. Let the ramekins stand for 5 minutes before eating. They carry on setting as they cool, and straight from the oven the middle is still loose.
10. Serve warm, in the ramekin, with a spoonful of yoghurt or a splash of cold milk poured over the top.

Recipe Variations

Apple and cinnamon. Replace the blueberries with half a grated apple folded into the batter and thin slices fanned over the top, and double the cinnamon. The apple releases water, so add 3 minutes to the bake.

Chocolate. Blend in 2 tablespoons of cocoa powder and an extra tablespoon of milk, then press a few squares of dark chocolate into the centre of each ramekin before baking.

Peanut butter. Swirl a heaped teaspoon of peanut butter into each ramekin with the tip of a knife once the batter is in. It stays in ribbons rather than mixing through.

Raspberry and lemon. Swap the blueberries for raspberries and add the zest of half a lemon to the blender. Sharper, and a better match for a sweet tooth that finds banana cloying.

Protein version. Add 20 g of vanilla protein powder and another 3 tablespoons of milk. Protein powder dries a bake out quickly, so check at 22 minutes.

Savoury-leaning. Leave out the maple syrup and cinnamon, keep the banana for binding, and top with chopped walnuts and a pinch of flaky salt.

Serving Ideas

Eat them straight from the ramekin while still warm, with a spoonful of thick Greek yoghurt melting into the top. The cold, sharp yoghurt against the hot sweet oats is the simplest version and still the best one.

A splash of cold milk poured over turns the dish back towards porridge, which suits a slow weekend morning. For something closer to a dessert, warm a little extra maple syrup and pour it over, or add a scoop of vanilla ice cream after dinner.

If you are serving them to guests, run a knife around the inside of each ramekin and turn the bake out onto a plate. It holds its shape well enough to sit upright, and with a few extra blueberries and a dusting of icing sugar it looks like a small pudding rather than breakfast.

Alongside, keep things plain: black coffee, a glass of orange juice, or a few slices of banana. The ramekin is already sweet and filling and does not need a crowded plate.

Keeping It Fresh

Cooled baked oats keep in the fridge, covered, for up to four days. Cover them properly: left open they dry at the surface and the banana darkens.

They reheat well, which is the main argument for making a batch on Sunday. Thirty to forty seconds in the microwave brings one back to warm, or 10 minutes in a 160 °C oven if you want the top to firm up again. A teaspoon of milk spooned over before reheating stops the centre tightening.

For the freezer, cool completely, wrap each ramekin or turned-out bake and freeze for up to two months. Thaw overnight in the fridge and reheat as above; frozen straight into the microwave they tend to cook unevenly, hot at the edge and cold in the middle.

The batter itself can also be made the night before and kept covered in the fridge. It thickens noticeably, so loosen it with a tablespoon of milk and expect a slightly lower rise, since some of the baking powder will have spent itself overnight.

Reader Questions Answered

Why do the oats have to be blended?

Whole rolled oats stay whole in the oven and the result tastes like a firm baked porridge. Blended, they behave like flour: they absorb the liquid evenly, trap the air from the baking powder and set into a crumb you can cut with a spoon.

How ripe should the bananas be?

Heavily speckled, ideally with large brown patches and a soft feel. A yellow banana is mostly starch and adds bulk without sweetness; a very ripe one has converted that starch to sugar, which is what lets the recipe work with a single tablespoon of maple syrup.

Can I make it without eggs?

Yes. Replace each egg with a tablespoon of ground flaxseed mixed with three tablespoons of water, left to thicken for 10 minutes. The texture is denser and slightly damper, and it needs about 5 extra minutes in the oven.

Can I use frozen blueberries?

Yes, and there is no need to thaw them. Add them straight from the freezer, keep them on the surface rather than stirring them in, and expect the bake to need around 3 extra minutes.

Can I bake it in one dish instead of ramekins?

Yes. Use a small baking dish of about 20 cm and bake for 30 to 35 minutes. The deeper the mixture sits, the longer the centre takes, so check with a skewer rather than the clock.

Wrapping Up

Blend the oats, blend everything else with them, pour into two ramekins, top with blueberries and bake for 25 minutes. There is one decision that matters, and it is made before the oven is even involved: grind the oats properly and use bananas that are past the point you would eat them raw.

Get those two right and the rest is hard to spoil. It is a breakfast that takes ten minutes of work, uses one jug and two dishes, and tastes considerably better than the effort suggests.

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Learn more: Blueberries on Wikipedia · food storage & safety (FoodSafety.gov).