Step 1

Melt butter in a saucepan, add onions and salt over medium heat.  Cook onions until they become translucent.

Step 2

Add flour and cook for 1 minute or until the mixture becomes fragrant.

Step 3

Stir in milk stir until the mixture becomes thick.

Step 4

Add corn and cheese.

Step 5

You can serve straight from the stovetop.  Or you can sprinkle on some additional cheese and heat in the oven until the cheese melts.