In a bowl, stir the brown sugar, butter, syrup, cinnamon and nutmeg together until smooth. Set aside.

Preheat the oven to 375 degrees F. Great a 9" cake pan. Place parchment paper in the bottom and grease the paper as well.

In a large bowl, whisk the flour, baking powder, and salt together. Cut in the butter with your fingers, until the mixture is crumbly and all large chunks of butter have been broken up.

Make a well in the center and add the buttermilk. Stir quickly until everything is just moistened and starts to come together.

On a clean surface, sprinkle some flour, and turn out the batter. Knead into a ball without overworking the dough. Press into a circle and roll out to a 16x12" rectangle.

With an offset spatula, spread the filling over the dough, leaving a 1/2" border. Starting with the long end, tightly roll. Cut the bits at the end off (about 1/2" - they have no filling anyway) and slice into 10 to 12 pieces.

Snuggle all that love into the prepared cake pan and slide into the oven to bake for 30 to 35 minutes, until golden brown.

While those are baking, whisk the cream cheese and yogurt together until smooth. Work in the powdered sugar a little at a time making sure it's smooth.