1. Dice the onions and garlic.
2. Heat two tablespoons of olive oil in a saucepan, add the onions and gently cook for 4 minutes and then add the garlic for an additional minute.
3. Stir in the peas and vegetable stock. Bring to a boil, then simmer for 5 minutes.
4. Cool slightly, add a handful of mint leaves and blitz until smooth.
5. Enjoy warm or chill in the fridge for a couple of hours before serving.