Stir yeast into warm water to dissolve.

Scald milk and cool to lukewarm.

In a bowl, add 1 cup of flour to the lukewarm milk; mix well.

Add the yeast mixture and beaten egg to the milk and flour mixture; stir well.

Add vanilla extract, ground cinnamon, salt, and shortening; mix well.

Gradually add the remaining flour and mix until a dough forms.

Cover the dough and let it rise in a warm place until doubled in size.

Punch down the dough and knead well.

Roll the dough into an oblong shape.

Spread the Solo filling (sweetened to taste) evenly over the dough.

Roll the dough up tightly.

Bake in a preheated oven at 375 degrees F (190 degrees C) for 30 minutes, or until golden brown.