"I LOVE to make this colorful, tart-tasting dessert in the spring, just as Mother always did. As soon as the fresh rhubarb is long enough to pick, I make sure this special dish makes an appearance on our table."
In a large bowl, sift together dry ingredients. Cut in shortening until mixture resembles coarse crumbs. Combine egg and milk; add to crumb mixture, stirring just until moistened. Turn out onto a floured surface. Roll into a 12x10-in. rectangle. Brush dough with melted butter; sprinkle with sugar and top with rhubarb. Carefully roll up dough, jelly-roll style, starting with the shorter side. Cut into 1-in. slices. Reshape the slices as needed to form round pinwheels.
Place in a 13x9-in. baking dish. For syrup, bring water and sugar to a boil in a saucepan. Cook and stir until sugar has dissolved. Stir in food coloring if desired. Carefully pour hot syrup over pinwheels. Bake at 400° for 30 minutes or until golden brown. Serve warm, with cream if desired.