Preheat oven to: 375 degrees (F)
Whisk the flour, baking powder, and sugar together in a large bowl.
Cut in the butter, then add the raisins and light cream. Combine just until the dough comes together — don't overwork it.
Turn the dough out onto a floured surface and pat it into a round about 1/2" thick.
Brush the top with the egg yolk for an egg wash.
Score into triangles, or cut into whatever shapes you like.
Bake 10-15 minutes, possibly longer, until golden.