Instructions

1. 1
   Place berries on a baking sheet and sprinkle with half of the sugar. Place 5–6 inches under a preheated broiler, and broil until well browned.
2. 2
   Remove and set aside until cool.
3. 3
   Combine cream, salt, and remaining sugar in a heavy saucepan over medium high heat. Add the raspberries, and boil until berries break easily.
4. 4
   Remove from the heat and set aside until cool. Purée in a food processor or blender until smooth. Alternatively, use an immersion blender directly in the saucepan.
5. 5
   Pour mixture back into saucepan, and place over medium high heat. Bring to a boil and cook until liquid has reduced by ⅔.
6. 6
   Stir in butter and vanilla until smooth, then cool.
7. 7
   Pour sauce over ice cream or fruit and serve.