Add olive oil in a small sauce pan and heat it.
Now add butter, chopped garlic, dried oregano, red chilli flakes and mix well.
Wait till the butter gets melted and remove from pan. Toss the cubed bread in it.
Preheat oven at 180 Degree Celsius.
Grease a baking tray with oil and place the cubed bread on it. Bake for 15-20 minutes at same temperature and the croutons are ready.