If using an air fryer, preheat to 200°C (390°F) or, for a conventional oven preheat to 210°C, fan 190°C, 410°F, or gas mark 7.
In a small bowl, mix together the softened butter and crushed garlic.
Butter both sides of the sliced white bread with the garlic butter.
Chop the bread into 1.5 – 2 cm cubes.
Air Fryer: Place cubes into the basket and bake for 5 – 6 minutes at 200°C (390°F) or until crisp and golden. ActiFry*: Place cubes in ActiFry and cook until crisp and golden. Mine took 12 minutes (see notes).Oven: Place cubes onto a preheated baking tray and bake for 12 minutes (or until crisp and golden) turning once with a spatula. Test to see if the croutons are ready by biting or cutting one in half, it should be crisp all the way through with no sign of doughiness.
Once cool, use to garnish soups and salads or store in an airtight container.