Preheat oven to 425° F.
Whisk together the flour, salt, baking powder and brown sugar in a mixing bowl. Add the butter, cutting it in with a pastry cutter or fork until the crumb resembles peas. Add the egg and cream. Mix well. If the mixture seems too dry, add a bit more cream until you get your desired consistency.
Place the mixture of a lightly floured work surface and pat out to about an inch thickness. Cut into eight triangles.
Place on parchment-lined baking sheet and bake for 12-15 minutes or until golden brown.