Begin by trimming the ends of the Brussels sprouts, removing any outer leaves that are brown. Slice each sprout in half, lengthwise, from stem to tip. For larger sprouts, quarter them to ensure uniform size for even cooking.

Optional Step: To achieve a more tender texture in the center, you can soak the Brussels sprouts. Place them in a large bowl, cover with warm tap water, and let them sit for 10 minutes. This is optional and can be skipped if you prefer a firmer bite.

Preheat your air fryer to 375°F. Refer to your air fryer’s manual for preheating time; typically, 3 minutes is enough.

After soaking (or if you skipped the soak), drain the sprouts and lightly pat them dry with a towel. Using the same bowl, return the Brussels sprouts and drizzle with olive oil. Season with salt and black pepper, then toss until evenly coated. Add the Brussels sprouts to the air fryer basket in a single layer.

Air fry for 5 minutes, then remove the basket and give it a shake to toss the sprouts. Return to the air fryer and cook for another 5 minutes. Check the Brussels sprouts—by now, they should be turning crispy and nearly done. If needed, let them cook an additional minute or two. Add the sliced garlic, toss once more, and continue cooking for another 2 to 4 minutes, shaking the basket periodically, until the Brussels sprouts are perfectly crispy.

If you plan to add any toppings, transfer the Brussels sprouts to a serving bowl and stir in the toppings of your choice. Serve immediately while hot and enjoy!