Butter Pecan Mousse Filling Be The First To Review By Momof4luvscakes recipe This is a good filling to put with butter pecan cake mix. Butter Pecan Mousse Filling Ingredients 3/4 cups pecans1/4 cup sugar1 tablespoon melted butter1/4 cup brown sugar1 cup heavy whipping cream2- 8oz cream cheese, softened1/2 teaspoon vanilla Instructions Coat pecans with melted butter, bake on a baking sheet @ 350 about 5 minutes until toasted. Chop finely. Set aside. Beat cream cheese, beat in sugar, vanilla, and whipped cream. Gently fold in pecans.