Step 1

Wash and trim the Brussels sprouts and pat them very dry. Cut each in half, or if they are very large, cut into quarters.

Step 2

In a large bowl, toss the sprouts with the butter, garlic, about 3/4 of the Parmesan, the salt, pepper, and red pepper flakes.

Step 3

Air fry at 400F for 15 to 20 minutes, stirring a few times during cooking, until tender and crisped to your liking.

Step 4

Return to the bowl to toss in any remaining butter, and sprinkle with the remaining Parmesan. Add additional seasonings to taste.