Question: can you substitute sweetened condensed milk for regular milk?
Answer: Most condensed milk is also sweetened. You can usually substitute 1 can (14 oz) of sweetened condensed milk with ½ cup of evaporated milk plus 1 cup of sugar and 2-3 tablespoons of melted butter. Failing that, cream and sugar, or whole milk and sugar will work if you cook them down a little.