Potato Cheese Sandwich, Easy Potato Snack, Quick and Easy Sandwich

Ingredients
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Boiled potatoes 2 medium size
Onion Chopped 2-3 tbsp
Tomato Chopped 2-3 tbsp
Capsicum Chopped 2-3 tbsp
Fresh coriander chopped
Mayonnaise 2-3 tbsp
Salt to taste
Black pepper powder 1/2 tsp
Red Chili flakes 1/4 tsp
Bread Slices
Butter
Mozzarella cheese grated.