Add chopped onions and sauté it till onion turns translucent.
Then add chopped capsicum, sauté it for a minute the add corn.
Mix it well then add sea salt, pepper powder & Italian season mix it well and sauté the mixture for 1 minute.
Turn of the flame set the mixture aside.
Take a bowl add some mayo to till, empty the cooked veggie mix in the bowl and mix it all together. The base for Sandwich is ready.
Take a slice of bread spread the mayo veggie base evenly, add another slice of bread and again spread the mayo veggie base evenly. Cover it with another slice of bread.
Take a grill pan, add some butter to it. Grill the sandwich.
Your grilled double layer mayo corn sandwich is Ready!!