Blueberry Pie Bars

Bahan-bahan (24 porsi)

• ¾ cup butter (softened, 1 ½ sticks)
• 1 ½ cup granulated sugar
• ¾ teaspoon salt
• 3 eggs
• 1 teaspoon vanilla extract
• 2 ¼ cup all-purpose flour
• 21 ounces blueberry pie filling (1 can)
• ½ cup powdered sugar
• ¼ teaspoon vanilla extract
• 1 -2 tablespoons heavy whipping cream (or milk)