Homemade air fryer buttermilk biscuits sound like a project. These aren't. You need four ingredients, there is no can to pop open, and cutting the dough into squares means there are no scraps to gather and roll again.
Keep the air fryer at 320°F and begin checking the biscuits at 10 minutes. Depending on your air fryer, the size of the biscuits, and how golden you like the tops, they may need closer to 15 minutes. The centers matter more than the stopwatch, so make sure they are baked through before pulling the batch.

I like the square shape for a very practical reason: no biscuit cutter, no rerolled scraps, and less fussing with the dough. Cut eight squares, move them to the basket, and get on with breakfast. Or dinner. Biscuits do not care what time it is.
Why this four-ingredient recipe works
Self-rising flour handles the leavening, while cold grated butter is easy to distribute without working the dough to death. Buttermilk brings the dough together and gives the biscuits their familiar flavor. That is the whole lineup.
The lower 320°F setting is the method used for this recipe. Other biscuit recipes may run hotter, but they also use different doughs, sizes, and air fryers. Start with the recipe in front of you and judge the finish by the biscuit, not somebody else's timer.
Air fryer buttermilk biscuit ingredients

Salted butter: Put it in the freezer for at least 10 minutes. You want it cold enough to grate into the flour instead of smearing through it.
Self-rising flour: This keeps the ingredient list short because the leavening is already mixed in.
Salt: Regular table salt works just fine here.
Buttermilk: This recipe is written for buttermilk. Regular milk can change the dough, so I am not promising a straight swap until that version has been tested.
How to make air fryer buttermilk biscuits
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Preheat the air fryer to 320°F and cut parchment paper to fit the basket. Put the butter in the freezer for 10 minutes. Meanwhile, whisk the self-rising flour and salt in a large bowl.

Grate the cold butter into the flour and stir to distribute it. Add the buttermilk, then stir gently just until a soft dough forms.

Turn the dough onto a lightly floured surface. Gently press or roll it into an 8-by-10-inch rectangle. Use a sharp knife dusted with flour to cut eight squares.

Place the biscuits on the parchment, working in batches when necessary. Air fry at 320°F. Begin checking at 10 minutes and continue until the tops are golden brown and the centers are baked through, about 10 to 15 minutes depending on the air fryer and biscuit size. Cool for 5 minutes before serving.

How long to cook air fryer buttermilk biscuits
Air fryers have opinions. Basket size, airflow, and biscuit thickness can all move the finish line a little. Start checking at 10 minutes. Look for golden tops and firm edges, then check that the center is baked through rather than gummy. Keep cooking in short intervals if it needs more time.
That is also why 15 minutes should be treated as the outside of the expected window, not a reason to ignore a batch that looks finished sooner.
Tips for flaky air fryer biscuits
Keep the butter cold. Cold pieces of butter are what you want going into the dough. If the butter softens while you work, pause and chill it again.
Go easy on the dough. Stir only until it comes together, then press or roll it gently. Extra handling works against the flaky texture you are trying to make.
Keep the squares even. Similar thickness matters more than perfectly straight edges because evenly sized biscuits are more likely to finish together.
Work in batches when needed. Give the biscuits room in the basket instead of stacking or crowding them.
No self-rising flour?
To replace one cup of self-rising flour, combine one cup of all-purpose flour with 1 1/2 teaspoons baking powder and 1/4 teaspoon salt.
For the two cups used here, that means two cups all-purpose flour, three teaspoons baking powder, and 1/2 teaspoon salt. Use that mixture in place of the self-rising flour, then follow the recipe as written.
Can you bake these biscuits in the oven?
This recipe is built around the 320°F air-fryer method. A regular oven needs its own verified time and temperature, so I am not going to keep promising the old 350°F-for-10-minutes shortcut without a separate oven test.
Storage
Store leftover biscuits in an airtight container on the counter for up to two days or in the refrigerator for up to four days.

What to serve with air fryer biscuits
These work for breakfast next to air fryer bacon, at dinner with easy air fryer ribs, or warm with butter and honey. If you want another homemade bread for the air fryer, try the air fryer focaccia.
If you are specifically keeping carbs low, head to the keto air fryer biscuits instead. Different biscuit, same very good excuse to eat one while it is warm.
Air Fryer Biscuits - Flaky Buttermilk Recipe
Air fryer biscuits are the easiest and flakiest addition to your kitchen rotation! These wonderful buttermilk biscuits cook in only 15 minutes and use only 4 ingredients!
Ingredients
- 1/4 cup salted butter, frozen
- 2 cups self rising flour
- 1/2 teaspoon salt
- 2/3 cup butter milk
Instructions
- Preheat the air fryer to 320°F. Cut parchment paper to fit the air fryer basket.
- Grate the frozen butter into a large bowl. Add flour and salt to the bowl and mix.
- Mix in the buttermilk and stir gently until a soft dough forms.
- On a lightly floured surface, place the dough and gently press out into an 8x10-inch rectangle.
- Using a sharp knife, dusted in flour, cut dough into 8 squares. Place the biscuits onto parchment, working in batches as needed. Bake for 10 minutes until golden brown and the center edges feel firm to the touch. Let cool 5 minutes before serving.
Nutrition Information:
Yield: 8 Serving Size: 1 biscuitAmount Per Serving: Calories: 170Total Fat: 6gSaturated Fat: 4gTrans Fat: 0gUnsaturated Fat: 2gCholesterol: 0mgSodium: 0mgCarbohydrates: 24gFiber: 1gSugar: 1gProtein: 4g
Any Nutritional Information provided is an amateur estimate. Please verify with your own brands and ingredients if nutrition is important to you.