Begin by washing the fresh broccoli thoroughly under cold water. Chop it into small florets, ensuring they are evenly sized for uniform cooking. For enhanced color and tenderness, blanch in boiling water for 2 minutes, then transfer to an ice bath.

In a large mixing bowl, combine the blanched broccoli, shredded cheddar cheese, breadcrumbs, garlic powder, onion powder, salt, and pepper. Crack an egg or mix a flax egg if you're opting for a vegan choice. Stir vigorously until well incorporated.

Form small balls or patties from the mixture, about the size of a golf ball, ensuring they are compact to hold their form during cooking.

Preheat your air fryer to 375°F (190°C) and lightly grease the basket with cooking spray or oil.

Arrange the shaped poppers in the basket in a single layer. Cook for 10 to 12 minutes, flipping halfway through.

Allow the poppers to cool for a minute before serving. Serve warm with your choice of dipping sauce.