The fastest way to make banana chips at home is in the microwave, where a batch takes about 15 minutes from start to finish. If you prefer a crunchier, more traditional result, an air fryer gets the job done in roughly 20 minutes including preheat. Both methods are significantly faster than oven-baking, which can take over an hour.
Choose the Right Banana
Green, unripe bananas make crisper chips and cook faster. They contain less moisture and less sugar than ripe bananas, which means less time driving off water and less risk of burning. Ripe bananas carry roughly 4% more moisture by weight, and their higher sugar content causes them to brown and stick more easily during cooking. If you’re after a savory chip (the kind you’d salt like a potato chip), green bananas are the only real option. For a sweeter snack, slightly underripe bananas with just a hint of yellow work well while still holding their shape.
Slice Thin and Even
Thickness is the single biggest factor in how quickly your chips cook. Aim for 1 to 2 millimeters, about the thickness of a coin. At this size, moisture escapes rapidly and the chips crisp up in minutes rather than needing a long, slow bake. A mandoline slicer is the fastest tool for the job, and it keeps every slice uniform so they all finish at the same time. If you’re using a knife, slice as thinly as you can manage and try to keep the pieces consistent. Uneven slices mean some chips burn while others stay chewy.
To prevent browning while you work, toss slices in a small bowl with a squeeze of lemon juice. This step is optional if you’re cooking immediately, but it helps if you’re slicing a large batch.
Microwave Method: 15 Minutes Total
This is the quickest approach. Line a microwave-safe plate with parchment paper and arrange banana slices in a single layer with no overlap. Lightly brush or spray them with oil if you want, though you can skip this for a fat-free chip.
Microwave on high for one minute. Remove the plate, flip each slice, then microwave on high for two more minutes, pausing at the one-minute mark to check progress. Most chips will be crisp and done at this point. If they still feel slightly soft, give them another 30 seconds. Every microwave varies, so checking frequently during the last minute prevents burning. The chips will firm up a bit more as they cool.
You’ll need to work in batches since only one layer fits per plate, but each batch cooks so fast that you can turn out several plates in under 15 minutes. Expect about 5 minutes of prep (slicing) and 10 minutes of actual cook time.
Air Fryer Method: 20 Minutes Total
An air fryer produces chips with a more even golden color and a satisfying crunch that’s closer to store-bought. Preheat to 325°F for about 5 minutes. While it heats, toss your banana slices lightly in oil (coconut oil is traditional, but any neutral oil works) and season with salt, cinnamon sugar, or whatever you like.
Spread the slices in a single layer in the basket. Air fry for 15 minutes, flipping once halfway through. They should be golden brown and crisp when done. Transfer them to a wire rack to cool rather than leaving them in the basket, where trapped steam can make them soggy. The air fryer handles slightly thicker slices better than the microwave, so if your knife skills aren’t producing paper-thin rounds, this method is more forgiving.
Stovetop Frying: Fastest Cook, More Effort
Deep frying is the traditional method for banana chips across South and Southeast Asia, and the actual frying takes only 2 to 3 minutes per batch. The catch is that heating the oil and managing multiple batches adds up. Food Network’s version clocks the full process at about 30 minutes for a large batch, with 5 minutes of prep.
Heat a few inches of oil (coconut oil gives the most authentic flavor) to 360°F. Drop in a small handful of slices, being careful not to crowd the pan. Fry until golden, flipping once. Remove with a slotted spoon and drain on paper towels. The result is richer and crunchier than microwave or air fryer chips, but you’ll use more oil and need to monitor the temperature between batches to avoid greasy or burnt chips.
Getting Chips Crispier
If your chips come out chewy instead of crunchy, three things are usually responsible: slices too thick, overcrowding during cooking, or not enough time. Overlapping slices trap steam, which is the enemy of crispness. Always use a single layer with space between pieces.
A light coating of oil helps with browning and crunch regardless of the cooking method. You don’t need much. A teaspoon per batch, brushed on with a pastry brush or sprayed from a mister, is enough. Chips also firm up as they cool, so give them a full two to three minutes on a rack before deciding they need more time. If they’re still soft after cooling, return them for another 30 to 60 seconds in the microwave or air fryer.
Storing Homemade Banana Chips
Homemade banana chips stay crisp for about two weeks in an airtight container at room temperature. Glass jars with tight lids or resealable bags with the air pressed out both work well. The key is keeping moisture away from the chips. If you live somewhere humid, adding a small food-safe desiccant packet to the container helps. Stored properly, the chips remain safe to eat for up to 90 days, though the texture and flavor are best within the first couple of weeks. If they lose their crunch over time, a quick 30-second blast in the microwave or a few minutes in the air fryer at 300°F can revive them.