Authentic Finnish Alexandertorte Recipe - Sweet Raspberry Dessert

Ingredients

• 0.5 lb (225 g) of chilled unsalted butter , cut into bits
• 3.5 cups (840 ml) of flour
• 3 tbsp (45 ml) of sugar
• 1 egg
• 1.5 cups (360 ml) of raspberry preserves (12 oz (340 g))
• 2 tbsp (30 ml) of softened butter
• 2 cups (480 ml) of confectioner's sugar
• 0.25 cups (120 ml) of cold water
• 2 tsp (10 ml) of lemon juice