Preheat oven to 375F/190C. Hull and slice the strawberries. Combine the brown sugar and cornstarch, then mix with the strawberries. Set aside.
In a large bowl combine the flour, baking powder, sugar and salt, then cut in the cold cubed butter with a pastry blender or a fork until the mixture resembles coarse crumbs. Add ground almonds and milk, then mix just until the dough comes together. Turn it out on a floured surface and shape into a rectangle 1 inch thick. Then cut into 12 square biscuits.
Turn the prepared strawberries into an 9-inch baking dish or a skillet, sprinkle with the Marsala wine if using. Then top with the biscuits. Brush the biscuits with the heavy/double cream and sprinkle with sugar. Bake in the preheated oven for 40-45 minutes until the biscuits are golden.