Orange Upside Down Cake

2 tablespoons melted butter or margarine

1 cup firmly packed brown sugar

2 oranges, peeled, sliced into cartwheels

2 cups raw cranberries 

1/2 cup shortening

1 1/2 cups sugar

2 eggs

2 cups sifted flour

1 teaspoon baking powder 

1/2 teaspoon soda

1/2 teaspoon salt 

1/2 cup milk

1/2 cup fresh-squeezed orange juice

2 teaspoons freshly grated orange peel

Cover bottom of 13x9x2" baking pan with melted butter; Top with an even layer of brown sugar. Cut orange slices in half; place in rows on top of sugar. Sprinkle over cranberries. Set aside. Cream shortening and sugar together until fluffy; beat in eggs until smooth. Sift together dry ingredients; add to cream mixture alternately with milk and orange juice, beating until smooth. Stir orange peel into batter. Pour over cranberry-orange mixture. Bake at 350 degrees for 45 to 50 minutes. Immediately turn out onto platter or tray. Serve warm or cool.