Oat and Banana Biscuits

Oats: use rolled oats, not the quick-cook kind. Rolled oats keep some shape and soak up the banana's moisture slowly, which is what gives the biscuit body instead of mush. Quick oats are already half-broken and will turn the whole mixture to paste the moment it meets wet banana — you'll get something closer to a pancake than a biscuit. If all you have is porridge oats labelled 'quick', add a spoon less banana to compensate for the extra absorption, or you'll be fighting a wet mix all the way to the tray.

Banana: ripeness is the whole recipe, so judge it by feel, not by colour alone. Press it gently — it should give under your thumb, and a few brown flecks on the skin are a good sign, not a defect. A banana that's still firm and pale inside hasn't made enough sugar or softened its pectin yet, and no amount of mashing will turn it into glue. There's no honest substitute for this — a banana is doing a specific job of binding and sweetening at once, and nothing else in a British kitchen does both.

Raisins or nuts: this is where you choose texture, not flavour. The mixture itself is soft and uniform, so you need something that bites back — a raisin bursts with its own concentrated sweetness, a nut gives crunch and a little fat, which rounds out the dryness of the oats. The criterion for substitution is simple: anything dried, small, and with a texture of its own works — chopped dates, dried cranberries, roughly broken walnuts or almonds. What doesn't work is anything that turns soft in the oven, like fresh fruit, because then you've lost the contrast entirely.

Cinnamon: one pinch, because its job is small. It's there to lift the banana's sweetness without masking it, the same reason it turns up in cheap porridge and stewed fruit across half of Europe — a spice that was once precious enough to be a show of wealth, now cheap enough to sit in every cupboard, used generously on humble ingredients precisely because it once couldn't be. If you haven't got it, nutmeg or a little ground ginger does a similar lifting job, in a smaller pinch, since both are sharper.

On pressing the rounds down: this isn't decoration. A domestic oven, especially the kind set into an ordinary flat kitchen, rarely heats evenly — you'll get a hot back corner and a cooler front. A flattened round gives more surface in contact with the tray, which means more even, faster heat transfer and a better chance the centre cooks through before the edges burn. Leave them mounded and thick, and you risk a gold crust around a banana-raw middle.

This is a two-person, ten-minute-of-your-attention recipe, and most of that ten minutes is just mashing and waiting for a ripe banana to agree to become glue — which is really the only patience this dish asks of you. Good with tea, the way most oat things are in this country, and a sensible way to use up the banana that's gone past eating on its own, which is really where half of this recipe's economy lies.