Cook corn either in microwave or cooker. If in microwave for 10 mins and if in cooker for 1-2 whistles.You can use canned or frozen corns too .
When the corn cob cools,slice the kernels using a knife.
Finely chop garlic ,spinach and capsicum.
Heat the butter in a pan on medium heat.Once it is melted, add chopped garlic. Saute for a minute or so untill the raw smell of garlic goes away.Add capsicum to it. Saute for 1-2 mins.
Next add chopped spinach . Saute for 2-3 mins till spinach leaves gets wilted .
Add corn and mix . Then sprinkle all purpose flour , saute for 1-2 mins .
Now add milk and mix everything well. Always use cold milk , so that you won’t get any lumps of flour.
Let the milk come to boil . Keep the flame on sim and allow the stuffing to thicken .. Stir occasionally . The stuffing should thicken nicely else the sandwich will turn soggy
Once the stuffing becomes really thick like a paste add grated cheese (if using ) , salt , pepper powder , chilly flakes and oregano powder . Mix everything well . Our stuffing for sandwich is ready . Allow it to cool .
Now lets proceed to make sandwiches . Take sandwich bread slices . Spread the creamy spinach corn mix on one slice of the bread . If you want , you can again keep a cheese slice on it or top it with some grated cheese . I usually do so only if doing for kids . .If you want you can top it with some sliced onions too ( i love it ) .Cover with another slice of bread
Once the sandwich is ready .. its time to grill them . For grilling you can either use tawa / grill pan /sandwich maker . I have used grilled sandwich maker . Once its hot , gently apply little butter to both the sides of the sandwich and grill it . Butter gives nice color and crispiness to sandwich .
Once they are nicely toasted , transfer to a serving plate . Continue the same process with the remaining slices . Serve cheesy grilled spinach corn sandwich hot with or without ketchup . Enjoy !!