Prepare cheese mixture: Preheat oven to 375°F. Beat cheese and butter at medium speed with an electric mixer until blended. Beat in heavy cream and next 5 ingredients.
Prepare bread squares: Cut crusts from white bread slices; cut each bread slice into 4 squares. Spread cheese mixture on half of bread squares (about 1 tsp. per square); top each with 1 remaining square. Spread remaining cheese mixture over top and sides of sandwiches. Place sandwiches, 1 inch apart, on a lightly greased baking sheet.
Bake: Bake at 375°F for 15 minutes or until golden brown.
