Preheat oven to 350ºF. Line a 9-inch square baking pan with parchment paper and set aside.
In a medium saucepan over medium-low heat stir together non-dairy butter substitute and brown sugar until melted and smooth.
Remove from heat and allow to cool for about 10 minutes.
While brown sugar mixture is cooling, in a medium bowl mix flour, cinnamon, baking powder, baking soda, and salt. Set side.
Once brown sugar mixture is cooled add eggs and vanilla. Stir to combine.
Add in the flour mixture. Stir until just combined.
Spread the batter into prepared baking pan, using your fingers if necessary.
Bake for 40 minutes. While its baking in a small bowl mix together cinnamon and sugar.
Remove from oven and brush tops of blondies with melted butter and sprinkle with cinnamon sugar mixture.
Cool, cut, and serve.