Summer Dessert Pizza

INGREDIENTS

• 1/4 cup margarine
• 1/2 cup sugar
• 1 egg
• 1/4 teaspoon vanilla
• 1 1/4 cups flour
• 1/4 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1/4 teaspoon salt
• 4 ounces cream cheese, softened
• 1/4 cup powdered sugar
• 1 cup whipped topping
• 1 cup sliced fresh strawberries
• 1 (8 ounce) can mandarin oranges
• 2 kiwi, peeled and thinly sliced
• 1/3 cup fresh blueberries
• 1 nectarine, thinly sliced
• 1/4 cup sugar
• 1/4 cup orange juice
• 1/4 cup water
• 2 teaspoons cornstarch