Here is a simple recipe for spinach/ palak soup.
Ingredients-1 bunch of Washed & cleaned Spinach, 1 medium onion, 1 tomato, 2 cloves of garlic, 2 -3 green chillies, 1 tsp black pepper, 1/4 tsp Dry oregano.
Heat up the oil, add the chopped onions, garlic, & green chillies. Once the onions become transparent add the chopped tomato. Then add chopped spinach & salt. Saute for a bit then add water or chicken broth. Add black pepper & oregano . Cover the vessel & let the spinach cook on a low flame. Once the spinach is done let it cool down & then blend it in a mixer. You can add some lemon juice for added flavour.