Preheat the oven to 175C(347F) fan-forced.
Line a muffin tin with cupcake liners
Mix the flour and baking soda together.
In the bowl of an electric mixer, beat together the spread and sugar until smooth and creamy and then add the egg whites.
Remove the bowl from the stand and mix in the ricotta then the flour and vanilla.
Gently fold through the raspberries.
Spoon the batter into the pans.
Bake the muffins for 15 minutes or until browned on top.
Transfer them to a wire rack to cool.
Serve them up straight away or freeze individually cling-wrapped muffins and defrost as desired.