Next, add the dried chickpeas to the pan with chickpeas. Cook for an additional 15-20 minutes. If you have water left in the pot when boiling chickpeas and mushrooms, it should be drained, but usually with this amount of water, it is practically not left at the end of boiling chickpeas. Next, add the sauteed onion. Mix the boiled chickpeas together with the onion. Adjust the salt and ground black pepper to taste.