Preheat oven to 400 degrees F. Lightly butter or spray a 9-inch springform pan with cooking spray.
Cream the butter and Truvia® in a large bowl with an electric mixer. Add eggs one at a time and mix on low until smooth. Stir in flour and salt, beat 1 minute until smooth. Scrape down the bowl. Stir in melted chocolate and vanilla extract and scrape bottom of bowl. Spoon into prepared pan. Fan pears over the top of the filling.
Bake until filling is slightly puffed and set throughout, about 35 minutes. Remove to a rack to cool slightly, 10 minutes. Remove the springform ring. Cool completely.
Recipe Courtesy of Truvia® natural sweetener