Place the broccoli florets into a sealable bag or bowl. Add in garlic, olive oil, salt and pepper. Toss to coat evenly.
Place in the air fryer tray and set to bake at 400 degrees Fahrenheit. Let roast for 8-10 minutes.
Once florets have started to brown just a tad and become tender crisp, Sprinkle the cheddar cheese on top and let air fry for an additional minute to get the cheese melted. Serve hot!