Preheat oven to 190c.

Remove the beef from the fridge and allow to sit at room temperature for at least 30 minutes.

Rub enough olive oil to coat all the beef.

Then rub salt, pepper and the garlic granules all over the beef..

Transfer to the oven. For every 450g roast for 20 minutes. I used a thermometer to make sure I got it just right.