Dauphinoise Potatoes in the Air Fryer
Dauphinoise potatoes need slow, gentle heat so the cream thickens and the slices turn silky, and that usually means an oven for over an hour. Dauphinoise potatoes in the air fryer take about 45 minutes in a small dish and give a deeply golden top. It works for 2–3 people, and this page is honest about when the oven is the better choice.
- Temperature
- 170°C
- Total time
- 1:10hr
- Prep
- 15min
- Servings
- 3
- Per serving
- 330kcal
Why the air fryer works for dauphinoise potatoes
Cooking dauphinoise potatoes air fryer style is a good idea for small households, because it heats up fast and browns the top better than a crowded oven. The circulating air gives the cream a bubbling, deeply golden crust and the layers a soft, silky middle. A small dish also cooks faster than a big gratin, so you get dinner in under an hour without heating a full oven.
The honest limit is size. Only a dish that fits inside a 4–6 litre basket will work, usually 16–18 cm across, and that serves 2–3 people. For a crowd at Christmas, make it in the oven. The air fryer is best for a weeknight roast or a small table.
How to make dauphinoise potatoes in the air fryer
Tap a time to start a timer.
- Slice Peel the potatoes and slice them as thinly and evenly as you can, about 3 mm thick, with a sharp knife or a mandoline. Do not rinse them, because the starch thickens the sauce.
- Warm the cream Put the cream, milk, garlic, nutmeg, salt and pepper in a pan with the potato slices. Heat gently for , stirring, until it just starts to simmer. This gets the cooking going.
- Fill the dish Butter a round ovenproof dish of 16–18 cm that fits the basket with a gap around it. Layer in the potatoes, pour over the cream and dot with the butter. Cover tightly with foil.
- Cook covered Preheat the air fryer to 170 °C. Lower the dish in on a foil sling and cook for , until the potatoes are nearly tender when pierced with a knife.
- Brown Remove the foil, raise the heat to 190 °C and cook for until the top is golden and bubbling. Rest for before serving so the sauce thickens.
Cooking times and temperatures
| Dauphinoise Potatoes | Temperature | Time |
|---|---|---|
| Fresh dauphinoise, 16–18 cm dishCovered, then 10–12 min at 190 °C | 170 °C | 25 min |
| Thinner layer, wide dishCovered, then 8 min uncovered | 170 °C | 20 min |
| Frozen dauphinoiseCover, then uncover for 8–10 min | 180 °C | 25–30 min |
| Reheated portionCovered with foil | 160 °C | 8–10 min |
Times are a guide and depend on the size of the food and the power of your air fryer. See also cooking times and temperatures for all dishes.
Tips
- Slice thinly and evenly. A mandoline makes this easy. If the slices vary, thicker ones stay firm while thin ones collapse.
- Warm the cream first. Simmering the potatoes for 5 minutes in the cream kick-starts the cooking and cuts the air fryer time by 10–15 minutes.
- Cover then brown. Foil keeps the cream from catching and reducing too fast. Taking it off for the last 10 minutes gives the golden top.
Serving
Dauphinoise is rich, so serve it with something plain such as roast beef, lamb or a pork roast, plus green beans or broccoli. Dauphinoise potatoes in air fryer-sized portions also suit a Christmas dinner for two. For a lighter side, try jacket potatoes.
Storing and reheating
Leftover dauphinoise keeps for 2 days in a covered container in the fridge. Reheat a portion covered with foil at 160 °C for 8–10 minutes, uncovering for the last 2 minutes, until steaming hot all the way through (75 °C). Do not reheat it more than once.
Variations
- Cheesy dauphinoise: Sprinkle 30 g grated Gruyère over the top for the last 10 minutes (the cheese may not be vegetarian).
- Garlic and thyme: Add 1 tsp fresh thyme leaves between the layers.
- Dauphinoise with onion: Layer in a thinly sliced small onion for extra sweetness.
Troubleshooting
- The dauphinoise is watery and the cream has split
- The potatoes were rinsed or the heat was too high. Keep the starch on the slices, cook gently under foil and rest the dish for 10 minutes before serving.
- The potatoes on top are still firm
- The slices were too thick or the dish too deep. Slice to 3 mm, keep the layers under 4 cm and cook 5 minutes longer under foil.
- The top has burnt but the middle is raw
- Cook covered with foil for the first 25 minutes, then brown uncovered. Keep the air fryer fan from lifting the foil by tucking it tightly around the dish.
Frequently asked questions
How long do dauphinoise potatoes take in the air fryer?
About 35–40 minutes in total for a small dish. That is 25 minutes covered at 170 °C and 10–12 minutes uncovered at 190 °C, with the potato slices warmed in the cream first.
Can you cook frozen dauphinoise potatoes in the air fryer?
Yes, if the dish is air fryer-safe. Remove any plastic lid, cover with foil and cook at 180 °C for 25 minutes, then uncover for 8–10 minutes until steaming hot all the way through (75 °C).
How do you reheat dauphinoise in the air fryer?
Cover a portion with foil and heat at 160 °C for 8–10 minutes, then uncover for 2 minutes. Make sure it is steaming hot all the way through (75 °C).
Can you make a bigger dauphinoise in the air fryer?
Only if your basket fits a larger dish. A standard 4–6 litre air fryer takes a dish of about 16–18 cm, which serves 2–3 people. For a crowd, use the oven.
Can you use milk only instead of cream?
You can, but the sauce is thinner and more likely to split. A mix of cream and milk is a good middle ground.
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