Wash spinach firstly and finely chop it. Finely chop garlic too.
Since we wash and cut, there will be some water retained, but let it be there, it will help in cooking.
Heat oil in a pan and add finely chopped garlic to it.
Sautee for a minute and add spinach, salt, sugar.
Cook until spinach reduces in volume and gets cooked. Take care not to over cook.
Transfer to a bowl. Add sour cream, pepper powder to it. Mix well and keep aside.
Mean while you can heat the sandwich maker with the griller plates.
If you do not have sandwich maker, you can do this in stove top with tawa/ flat pan too.
In a slice of bread, spread the prepared spinach mix and sprinkle some cheese in the middle.
Grill for 2-3 minutes in a well greased sandwich maker, after the green light is on or follow the instructions from the manual of your sandwich maker.
Just make sure to bring golden crisp lines over the sandwich.