Kale chips have transformed from a niche health food trend into a staple snack for anyone seeking a crunchy, nutritious alternative to potato chips. When prepared correctly, these leafy greens turn into delicate, shatteringly crisp morsels that carry flavors beautifully. Making them at home is not only cost-effective but also allows you to control the quality of the oil and the intensity of the seasoning. This guide provides a comprehensive look at the techniques and tips necessary to master the art of the kale chip.
Selecting the Best Kale
The foundation of a great kale chip is the kale itself. While there are several varieties available, two types are most commonly used for baking.
Curly kale is the classic choice. Its ruffled edges create many nooks and crannies that hold onto oil and spices. This variety tends to result in a very airy and light chip. Lacinato kale, also known as dinosaur kale or Tuscan kale, has a flatter, darker leaf with a bumpy texture. Lacinato kale chips are often sturdier and have a slightly more earthy, nutty flavor.
Regardless of the variety you choose, look for bunches with firm, vibrant leaves. Avoid any kale that appears wilted, yellowed, or slimy. Freshness is key to achieving that signature crunch.
The Importance of Washing and Drying
Preparation begins with a thorough wash. Kale grows close to the ground and can trap grit in its curls. Rinse the leaves under cold running water. Once clean, you must remove the tough woody stems. You can do this by holding the base of the stem and sliding your hand upward to tear the leaves away, or by using a knife to cut along either side of the rib.
The most critical step in the entire process is drying the kale. Water is the enemy of crispiness. If the leaves are damp when they go into the oven, the moisture will create steam. Steamed kale becomes limp and chewy rather than crunchy. Use a salad spinner to remove the bulk of the water. Afterward, spread the leaves on a clean kitchen towel and pat them until they are bone-dry.
Sizing and Tearing
Once dry, tear the kale into bite-sized pieces. Keep in mind that kale shrinks significantly during the baking process. Aim for pieces that are slightly larger than you want the finished chip to be. Try to keep the sizes consistent so that they all finish cooking at the same time. If you have a mix of massive leaves and tiny shards, the small ones will burn before the large ones are ready.
The Art of Oiling and Seasoning
A common mistake is using too much oil. You want a very thin, even coating on every surface of the leaf. Place your torn kale in a large mixing bowl. Add about one tablespoon of oil per large bunch of kale. Avocado oil and extra virgin olive oil are excellent choices due to their flavor profiles and stability at low temperatures.
Massage the oil into the leaves with your hands. This ensures that every fold of the curly kale is reached. The leaves should look shiny but should not be dripping with oil.
For seasoning, start with a fine-grain sea salt. Fine salt adheres better to the leaves than coarse salt. If you want to experiment with flavors, consider these popular combinations:
- Nutritional yeast for a cheesy, vegan-friendly flavor.
- Smoked paprika and garlic powder for a barbecue vibe.
- Chili powder and lime zest for a zesty kick.
- Everything bagel seasoning for a savory crunch.
Apply seasonings after the oiling process so they stick to the leaves. Use a light hand initially, as the flavors concentrate as the water evaporates.
Baking to Perfection
Temperature control is the secret to avoiding bitter, burnt chips. A low and slow approach is usually best. Preheat your oven to 300°F (150°C).
Line a large baking sheet with parchment paper. Arrange the kale in a single layer. Do not crowd the pan. If the leaves overlap, they will trap moisture and remain soft. It is better to bake in multiple batches than to rush by overfilling the tray.
Bake for 10 to 15 minutes. At the halfway mark, rotate the pan to ensure even heat distribution. Start checking the chips frequently toward the end. They are done when the edges are slightly brown and the centers feel firm and crisp to the touch. They will continue to crisp up slightly as they cool on the pan.
Troubleshooting Common Issues
If your chips are soggy, it is almost always due to residual moisture on the leaves before oiling or overcrowding the baking sheet. Ensure the kale is completely dry and the oven is not overloaded.
If your chips are bitter, they may have spent too much time in the oven or the temperature was too high. Kale contains sulfur compounds that can turn unpleasantly bitter if charred. If you find 300°F is too hot for your specific oven, try dropping the temperature to 275°F and extending the baking time.
Storing Your Snack
Kale chips are best enjoyed immediately. However, if you have leftovers, store them in an airtight container at room temperature. Avoid refrigerating them, as the humidity in the fridge will turn them soft instantly. If they do lose their crunch, you can put them back in a 300°F oven for 2 or 3 minutes to “re-crisp” them.
Frequently Asked Questions
Can I make kale chips in an air fryer?
Yes, air fryers are excellent for kale chips because they circulate air efficiently. Set the air fryer to 300°F and cook for 4 to 6 minutes, shaking the basket halfway through. Watch them closely, as they cook much faster than in a traditional oven.
Why do my kale chips turn brown so fast?
Kale is very thin and has a high surface-to-volume ratio. This makes it sensitive to heat. If your chips brown too quickly, your oven may have hot spots, or the temperature is set too high. Try lowering the rack or reducing the heat.
What is the best oil for kale chips?
Avocado oil is highly recommended because it has a high smoke point and a neutral flavor. Extra virgin olive oil is also great for its heart-healthy fats and slightly peppery taste. Avoid using butter or coconut oil if you want a very light, crispy texture, as these can sometimes feel heavier.
Is nutritional yeast necessary?
Nutritional yeast is not necessary, but it is a favorite for many. It provides a savory, “umami” flavor that mimics parmesan cheese. It is a great way to add flavor without adding dairy or excessive sodium.
How do I keep the seasoning from falling off?
The key is the oil. The oil acts as a glue for the salt and spices. By massaging the oil into the leaves first, you create a tacky surface that holds the seasonings in place through the baking process. Using finely ground spices also helps them stay attached to the leaves.