SweetAir fryers have quietly become one of the most-used appliances in a lot of kitchens, but most people only use the recipes built specifically for them rather than trusting themselves to convert an oven recipe over. The conversion is more approachable than it looks, once you understand what's actually different about how an air fryer cooks.
Why an air fryer isn't just a small oven
An air fryer is, at its core, a compact convection oven — a heating element with a fan that circulates hot air rapidly around the food. That circulating air is the key difference from a standard oven, where heat mostly rises and settles more passively around whatever's baking. Faster-moving air transfers heat to food more efficiently, which is why air fryers cook faster and at lower set temperatures than a conventional oven recipe calls for, and why food browns and crisps on the outside more readily than in a regular oven.
The general conversion rule
A reasonable starting point when converting an oven recipe is to drop the temperature by about 25°F from what the recipe calls for, and check for doneness starting at roughly 20 percent less time than the original bake time — so a recipe that bakes 20 minutes at 375°F in the oven might be worth starting at 350°F and checking around the 16-minute mark in the air fryer. These are starting points, not guarantees; every air fryer model runs a little differently; the honest approach is to check early the first time you convert any recipe, rather than trusting a formula blindly and finding out too late that this basket runs hotter than the last one you owned.
Where our own air fryer recipe landed
Our 3-Ingredient Air Fryer Nutella Crescent Rolls is a good example of what a properly air-fryer-native recipe looks like once it's dialed in — 350°F for 5 to 6 minutes, well under what the same crescent rolls would need in a conventional oven, and a single layer in the basket rather than stacked. That single-layer detail matters more in an air fryer than a regular oven: because the fan is doing the work of circulating heat, anything stacked or overlapping blocks that airflow and cooks unevenly, whereas a conventional oven's more ambient heat is a little more forgiving of crowding.
What converts well, and what doesn't
Recipes that are naturally small and individually portioned — cookies, crescent rolls, small pastries, hand pies — convert to the air fryer easily, because they fit in a single layer and cook through quickly without needing the more gradual, even heat a large item benefits from. Anything that needs to bake as one large mass, like a full cake, a pan of brownies, or a loaf, is a much harder conversion: air fryer baskets are small, air circulation around a tall or wide pan is uneven, and the outside can finish (or burn) well before the center sets. Some air fryer ovens with a larger basket and a dedicated bake pan can handle these, but a basket-style air fryer generally can't do them well, and it's often not worth forcing it.
Watch the edges, not just the center
Because air fryers brown food faster on the outside than a conventional oven does, checking doneness by color alone can be misleading — something can look perfectly golden well before the inside has actually finished cooking through, especially for anything with a filling. For the crescent rolls, that means checking that the dough has puffed and cooked through, not just that the outside has browned, since a Nutella filling with a lot of moisture can make the outside look deceptively done. Piercing near the seam or gently pressing to check for doneness is a more reliable check than color for filled items.
A note on parchment and liners
Parchment paper works in most air fryers, but it should be weighed down by the food itself or have holes for airflow — a loose sheet of parchment can get pulled up into the heating element by the fan, which is a real fire risk. If a recipe calls for parchment in an air fryer, use a piece cut to roughly the size of the basket and only under food heavy enough to hold it down, not draped loosely over the sides.
The short version
Drop the oven temperature about 25 degrees, cut the time by roughly a fifth as a starting point, and check early rather than trusting the math blindly. Small, individually portioned desserts are the easiest wins; large single-pan bakes are usually not worth the fight. Once you've converted one recipe successfully on your specific machine, you'll have a much better feel for how far to trust the general rule next time.