Strawberry Squares

Bahan-bahan (24 porsi)

• 1/2 cup unsalted butter (softened)
• 1 1/2 cups granulated sugar
• 4 large eggs (at room temperature)
• 1 tsp . pure vanilla extract
• 2 cups all-purpose flour (or GF flour)
• 1/2 cup canned strawberry pie filling
• confectioner's sugar for dusting
• baking spray