Preheat oven to 250 deg celsius.
In a bowl and mix all the chopped ingredients, grated cheese and add seasoning, pepper and salt as required. Be careful while adding salt, as butter, cheese and bread already contains salt.
Take bread slices and apply butter on both sides .Applying butter on both sides gives you a crunchy base.
Take a baking tray, arrange the buttered bread .Take a spoon full of above mixture spread it over the bread.
Close it with a cheese slice and bake in a pre heated convection oven for 6-8 minutes.
If you bake more, it becomes more crunchy and dry. Just make sure that, cheese just starts melting and veggies are cooked, not burnt.
Toast are ready, serve immediately with Tomato Ketchup.