Stir rhubarb, sugar and ginger (if using) in a medium bowl. Divide the mixture evenly among six 8-ounce ramekins (see Variation). Place the ramekins on a baking sheet and cover tightly with foil. Bake until the rhubarb is softened, 25 to 30 minutes. Remove from the oven and remove the foil.
Carefully tuck strawberries between the chunks of rhubarb (Do not stir or the rhubarb will break apart).
Beat egg whites and cream of tartar in a large bowl with an electric mixer on medium until soft peaks form. Gradually add sugar and continue mixing until the egg whites are glossy and hold peaks. Spoon beaten egg whites over each portion of fruit. Use a thin spatula to spread the meringue into decorative peaks.
Return the ramekins to the oven and bake until the meringue is lightly browned, about 10 minutes. Let cool for at least 10 minutes. Serve warm or at room temperature. Variation: This dish can be made in a deep-dish pie pan instead of individual ramekins; the recipe and timing are the same.
Tips & Notes
Dried egg whites are pasteurized—a wise choice when making meringue toppings that may not reach 160°F (the temperature at which eggs are considered "safe"). Look for them in the baking section. Reconstitute according to package directions.
148 calories, 0 g. fat, 0 mg. cholesterol, 31 mg. sodium, 35 g. carbohydrate, 2 g. fiber, 3 g. protein