Ingredients:

  • 1 can (14 oz / 397g) sweetened condensed milk
  • 2 tbsp (28g) unsalted butter
  • 1/2 tsp (3g) fine sea salt
  • 1 tsp (5ml) pure vanilla extract

Instructions:

  1. Place the sweetened condensed milk, unsalted butter, and salt into a heavy-bottomed saucepan.
  2. Stir the mixture over medium-low heat until the butter has completely melted and the ingredients are fully integrated.
  3. Continue to simmer the mixture, stirring constantly with a silicone spatula and scraping the bottom and corners of the pan to avoid scorching, until the sauce transforms from pale cream to a deep, glossy tan, thickens slightly, and smells toasted.
  4. Remove the pan from the heat immediately and stir in the vanilla extract until smooth.
  5. Let the sauce sit for 5 minutes to thicken further before serving or transferring to a glass airtight jar for refrigeration.