Mix sugar and milk, sprinkle yeast, let bloom
Add in margarine and 2 c flour, knead, let rest 1 H
Mix flour, BP and BS on a separate bowl
Add in this mixture into previous mixture
Knead and roll flat, then cut into rectangular
Place filling in the center
Shape into rolls or buns, let rest for 30-45 mins
Bake on preheated 350 F for 20mins
Serve sprinkled icing sugar