Cut the bagel into 6 equal pieces.
Finely mince the garlic.
Leave the butter at room temperature until soft.
Mix the softened butter with the minced garlic, sugar, and parsley flakes.
Spread the garlic butter evenly on both sides of the bagel pieces.
Preheat the air fryer or oven to 180°C (356°F) and bake for 5-7 minutes.