Fresh Blueberry Napoleons - Blueberries

Ingredients

• 6 slices firm white sandwich bread, crusts removed
• 1 teaspoon butter, softened
• 1/4 teaspoon sugar
• 1 cup ricotta cheese (whole or part-skim milk or cottage cheese)
• 1/4 cup mascarpone or cream cheese
• 1/4 cup confectioners' sugar
• 2 tablespoons apricot preserves
• 1 cup blueberries