If you find yourself in a bind, or the grocery is sold out of Eagle Brand, here is a recipe for sweetened condensed milk. I’ve not tried it, although it’s one of those “good to have in the back pocket” kind of recipes.
Sweetened Condensed Milk (Bingham Collection)
1/2 c warm water
1 c 2 tbsp powdered milk
3/4 c sugar
mix water and milk in pan over hot water (not boiling). Add sugar, mix until smooth.