in a small saucepan, combine melted butter, cinnamon, brown sugar, and sugar over medium heat.

stir until hot, the sugar will start to melt

add heavy cream and heat on high until the cream just barely starts to boil.

remove from heat and stir.

by this time the sauce should stick to the spoon like honey.

add more sugar if too thin or more cream if too thick.

serve drizzled over the fries or as a side for dipping.