Take a saucepan and put ¾ cup chopped onions in it

Add the 4 ½ cups peeled and diced potatoes to the saucepan

Fill the saucepan with water and boil

Simmer it for about 10 minutes till it gets soft

Drain the whole mix

Now take the 1 tbsp margarine and melt it in the saucepan

This should be added with 3 tbsp flour

Stir the whole mix until it gets smooth

Then heat the mixture so that it becomes thick

Add the 1 quart whole milk mixture to the onions and potatoes

Heat it to serving temperature