Soak the chickpea overnight in enough water. Let it soak for around 10-12 hours. Next morning drain it completely. Wash well and cook it in enough water with 1/2 tsp salt for around 12 whistles in pressure cooker or for 15 minutes in instantpot. Drain the water. Mash it lightly. Keep aside
Now cut the vegetables finely and grate the carrot
Add the prepared vegetables to the cooked and mashed chickpea
Now add mayonaisse and mustard sauce to the chickpea vegetable mixture
Add the required quantity of salt, lemon juice. Mix well to prepare the delicious chickpea vegetable salad
Now heat the toaster. Apply butter and keep a bread slice on it. Keep a good amount of the salad as the filling, top it with another layer of bread and apply butter on it. Close the toaster and grill it browns on both sides