Melt butter in a pot, and sauté thinly sliced onion and green peas.
Add 150g water and boil until onion and green peas are very tender. Add a little more water, if necessary.
Add a cube of consommé to the pot, and after it dissolves, purée the soup in a blender.
Return the soup to the pot, add milk, and stir consistently to keep the soup from burning. Add salt and pepper to taste.
Put ingredients for the spider web pattern into a sturdy vinyl bag (such as a zip-lock bag), and heat in microwave for 10 seconds.
Mix together the ingredients from outside the bag, and adjust the amount of milk depending on the softness, then reheat in the microwave. It should reach the firmness of 80% stiff whipped cream. Be careful not to burn yourself!
Once the cream is smooth enough and there are no more lumps, cut a very small hole in the corner of the bag, and, as if using a decorating bag, pipe a spider web pattern on top of the soup in serving bowls.
To make the spider web pattern: starting in the center, create a spiral moving outward, then, using a toothpick, draw about 6-8 radiating lines. Children will love helping with this step.
Story Behind this Recipe
I made a potage out of some boiled green peas that I froze in the summer, then dressed it up with a spider web for a touch of Halloween.
The firmness of the cream cheese for the pattern is the key point. If it's similar to un-whipped heavy cream, it will melt in the soup, so use a little milk with the cream cheese to adjust the firmness. Since the firmness of the cream cheese depends on the brand, start out with a small amount of milk.