Recipe(tried): Macadamia Nut Sauce - I think I found it !

MACADAMIA NUT SAUCE

1 cup macadamia nuts
1 tbsp butter
2 tbsp flour
1 cup each whole milk and heavy (whipping) cream (OR 2 cups half & half)
3 tbsp sugar
1 tsp kosher salt
2 tsp vanilla extract
3/4 tsp lemon juice

Finely grind nuts in food processor. Dry cook in saucepan over medium-high for 5 minutes, until fragrant.

Lower heat to medium. Add butter; stir until melted. Stir in flour cook 1 minute.

SLOWLY add milk and heavy cream (or half & half), CONSTANTLY whisking. Add sugar, salt, and vanilla. Bring just to a boil (or almost to a boil, be careful) and then reduce heat just a little so that it's not boiling. Cook 5 minutes or until thickened, stirring CONSTANTLY.

Serve warm.