Chop off the top and bottom of your leeks
Chop into evenly sized pieces
Wash the leek
Heat butter in a saucepan
Add in your washed leek, mix and leave to cook on medium-low heat
Peel, chop into even pieces and wash your potatoes in the meanwhile
Season your softened leeks in the pan, salt, pepper & garlic powder
Peel, chop and add the red onion to the leek
Add in the potatoes and give it a nice mix!
Submerge all the veg in water and leave to cook until the potatoes are soft, use a fork to prick and check
Once cooked, leave to cool for around 20 mins, & then put all the contents into a blender and blend until smooth
Once blended, return to saucepan on the stove
In a separate pot, mix together the vegetable broth cube and water (quantity is not important, just enough to dissolve the stock cubes)
Add the stock to the soup and leave to simmer, cook the soup to your desired thickness, add water for a thinner soup. Season to taste.