Combine flour, brown sugar, baking powder, and salt in large bowl. Add butter and cut in with a pastry cutter until mixture resembles coarse crumbs. Gradually add cream, mixing until a slightly crumbly dough forms. Wrap dough in plastic wrap and chill 15 minutes. Preheat oven to 350 degrees F. Line a baking sheet with a silicone mat or parchment paper. Roll out dough to about 3/4? to 1? thick and cut into eight to 12 3-inch rounds. Place rounds on sheet, about 2 inches apart. If desired, brush tops with some extra cream and sprinkle with raw sugar. Bake about 20 minutes at 350 degrees F, or until a toothpick inserted near the center comes out clean and a light golden brown color. Cool before serving.