Rhubarb and raspberry tart

2 c  Rhubarb
      1 c  Raspberries
    3/4 c  Granulated sugar
      3    Eggs
      1    Egg yolk
    1/2 c  Whipping cream
    1/3 ts vanilla
      1    Pie dough for 10-in.shell
 
  Raspberries and rhubarb in one tart means that one of the fruits must be
  frozen if locally produced products are to be used. Happily, this dish
  works well with either fresh or frozen berries or rhubarb. The reds and
  pinks are beautiful together and the flavours blend wonderfully.
  1. Roll out pie dough into 10-inch tart or pie pan.
  2. Cut rhubarb into 1/4 inch pieces, distribute evenly in tart shell, then
  sprinkle with raspberries.
  3. Combine sugar, eggs and egg yolk in a mixing bowl; whisk ingredients
  together.
  4. Add cream and vanilla and mix.
  5. Pour egg mixture over fruit and bake in preheated 400F(200C) oven for
  20 to 25 minutes, or until tart batter is quite firm.