Trim crust from bread. With roiling pin, flatten bread thin. Set aside and make the cream cheese mixture. Cream the cheese, vanilla, egg yolk and sugar. Spread mixture on bread and roll up. Using basting brush, brush melted margarine on each roll, then roll in the cinnamon and sugar mixture. Bake on greased cookie sheet for 15 minutes at 350F. Can be made ahead and frozen. Allow to thaw before baking.
Cajun Country -- New Iberia, Louisiana