1 package of frozen broccoli
1 package of frozen cauliflower (or 2 of one of these)
place in large enough pan and add some water, to not quite cover the vegetables.
2-2.5 tsp. salt
2 T. dried onion flakes
a generous spoon full of minced garlic (more or less to taste)
pepper to taste
1/4 tsp. dry mustard powder
All all to simmer until the vegetables are tender.
Remove from heat. Puree with immersion blender until the vegetables are "cream of x soup" textured.
Add 1 can of coconut milk.
Stir in and re-heat if necessary.
...this is delicious and very filling. Several of my family members thought it had cheese in it.
To make this soup more nourishing (but not vegan) use homemade bone broth instead of water.