From Everyday Food, Dec. ’09

  • 6 tbsp unsalted butter
  • about 6 pounds of onions, sliced about 1/4″, maybe narrower.
  • 2 tsp coarse salt (kosher)
  • 1 tbsp sugar.

Melt butter.  Add onions and salt.  Cook until softened and just beginning to brown.  Reduce heat to med.  Add sugar, stir often to scrape up any browned bits, 35-40 min.

When done, onions should be deep golden brown and have a jam like consistency.