For 2 persons take 1 cup hung curd. Strain the curd and drain the water. Don't waste curd water you can use in the curry. Once it is done then keep hung curd in a fridge. Next day take out from the fridge when it is in a room temperature then add finally chopped capsicum, grated carrot, few chopped dhania leaves and salt as needed. If you want to add grated cheese. Here I didn't use grated cheese. Mix it well and keep a aside.

Now take 2 brown bread slices. Apply the mixture and keep another bread on the top of the bread. Press it gently. Once it is done then keep aside. Now heat non-stick pan or tawa. Heat 1/2 tsp butter. Arrange the bread and press it gently so that the stuffings will not comes out.
I have toasted the sandwich in tawa before serving.