Strawberry Milkshake Sheet Cake Squares for Dessert

Ingredients

• 2 cups all-purpose flour
• 1 and 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 3/4 cup unsalted butter, softened
• 1 and 1/4 cups granulated sugar
• 2 large eggs
• 2 teaspoons vanilla extract
• 1/2 cup whole milk
• 1/2 cup strawberry puree
• 1/2 cup unsalted butter, softened
• 3 cups powdered sugar
• 1/4 cup strawberry puree
• 1/4 cup whole milk
• 1 teaspoon vanilla extract
• Pinch of salt
• Fresh sliced strawberries