Custard melting moments with raspberry filling

Ingredients

For the biscuits:

• 250 g softened butter
• 1/2 teaspoon vanilla extract
• 1/2 cup icing sugar
• 1 cup custard powder
• 1 cup plain flour

For the filling:

• 1/4 cup butter (about 30g)
• 1/2 teaspoon vanilla essence
• 1/4 - 1/2 cup icing sugar, according to taste - we used 1/2 cup
• 6 frozen raspberries, thawed