Preheat the oven to 350°F (175°C or 165° for fan ovens).
Cream the butter, ¼ cup sugar and salt until light and fluffy.
Blend in the almond extract and two of the egg yolks. (You will not need the third yolk. It can be frozen or added to scrambled eggs or an omelette.)
Mix in the flour until well blended.
Pat the mixture into an ungreased 13 x 9 x 2 inch (33 x 23 x 5 cm) pan.
Bake for 10 to 15 minutes, until the pastry is just beginning to take on a light, golden colour.
Remove the pan from the oven carefully using oven gloves and place on a heat proof surface.
Spread the jam over the top of the pastry carefully. It's easiest to do this using a pallet knife.
Sprinkle the coconut over the jam.
Using an electric stand mixer or hand mixer, beat the three egg whites until foamy.
Continue to beat the egg whites, gradually adding the ½ cup sugar. Beat until stiff peaks form.
Spread the meringue over the coconut, creating some little meringue peaks (like mini snow drifts) as you go.
Bake for 20 to 25 minutes or until the meringue is just beginning to turn golden brown.
Remove the pan from the oven and cool on a wire rack until the bars are at room temperature.
When completely cool, cut into 24 squares. Raspberry Snow Bars are best served on the day they are made but they can be kept in a sealed container at room temperature for 24 hours.