Rhubarb-Strawberry Cobbler

Ingredients

• rhubarb

  cut into 1-inch chunks (4 cups)
  1 1/4 pounds
• plus 1 teaspoon Sugar
  3/4 cup
• cornstarch
  1 tablespoon
• strawberries

  each hulled and cut into quarters
  1 pint
• all-purpose flour
  1 1/2 cups
• baking powder
  1 1/2 teaspoons
• baking soda
  1/2 teaspoon
• salt
  1/4 teaspoon
• ground cinnamon
  1/4 teaspoon
• ground nutmeg
  1/8 teaspoon
• margarine or butter (1/2 stick)
  4 tablespoons
• plus 1 tablespoon heavy or whipping cream
  3/4 cup