1Heat oven to 425°F. Spray 9-inch round cake pan with cooking spray. In 2-quart saucepan, heat rhubarb, 1 cup sugar and 1 tablespoon water to boiling over medium-high heat. In small bowl, mix cornstarch and 2 tablespoons cold water; stir into rhubarb mixture. Reduce heat to low; simmer uncovered about 5 minutes, stirring occasionally, until rhubarb is tender. Cool sauce about 30 minutes. Stir in strawberries.
2In medium bowl, stir Bisquick mix, 3 tablespoons sugar, 1/2 cup milk and the butter until soft dough forms. Press in bottom of pan; brush with milk. Sprinkle with 1 teaspoon sugar and the almonds.
3Bake 15 to 20 minutes or until light golden brown. Remove from pan; cut into wedges. Split wedges horizontally. Fill and top shortcakes with sauce; top with whipped cream.