Awesome Cream of Mushroom

I have some portobellos and swiss browns that I bought last week. I know I need to finish them as soon as possible or else they will end up in the dustbin by end of the week. So I thought I could make some cream of mushroom because my 2 daughters love creamy soup. Campbell soup is like a staple food for them and it is a compulsory item in my grocery list every week. This is actually a no brainer recipe (no recipe at all actually)...I just assemble and cook whatever I think could enhance my soup flavour. But I need to write this down for my daughters S & M who love mummy's version of Cream of Mushroom which according to them is way much better and more delicious than Campbell soup (dughhhh!!) :)

Ingredients:

1 medium sized portobello mushroom (take out the stem and scoop out the gills using a small teaspoon) 

4-5 medium sized swiss brown mushrooms 

2 tbsp extra virgin olive oil
2 tbsp butter
1 yellow onion - finely diced
2 cups chicken stock or vegetable stock
1/2 cup cream
1 cup milk
salt and pepper
Herbs such as fresh thyme and sage-optional (I didn't put any because I don't have it)

1 tbsp butter
1 tbsp flour
1 tsp lemon juice

Instructions:

1. Slice all the mushroom and put them in a bowl. Scoop 1/3 of them and set aside.
2. Put the oil into a medium sized pot or a small dutch oven over a medium-low heat.
3. Add in the butter and let it melt. Sautee the onion and let them cook until translucent. 
4. Add in the mushrooms and some salt and pepper (you can also put in the herbs at this point), put the lid on and let it cook for about 5 minutes.
5. Pour in the chicken stock and let it simmer for another 7-10 minutes, stir occasionally. Remove from the heat. 
6. Using a handheld blender, blend the soup until it turns off white-creamy look.
7. Return to heat, add in the cream and milk. Stir.
8. Take out a small frying pan, melt the butter in it and put the 1/3 mushroom that you have set aside earlier. Cook for about 3 minutes, add in the flour and lemon juice. Cook for another  minute. Remove from the heat and pour them into the soup.
9. Let the soup simmer for another 3 minutes and it is done! Serve with garlic breads...YUMMMM!!!