Method
1. Pre-heat oven - 175°C
2. In a heavy saute pan over medium heat, melt the butter
3. Stir occasionally, scraping the bottom of the pan, and bring the butter to a simmer
4. Continue to stir occasionally. Once the popping has died down, keep an eye on the solids in the pan
5. Once they turn dark brown, pour the butter {scraping everything in the pan along with it} into a separate container
6. Let the butter cool for 5-10 minutes before proceeding
7. In medium bowl, combine the flour, baking powder, cinnamon, and salt. Whisk together and set aside
8. Once the butter has cooled slightly, mix it together with the two sugars
9. Add the eggs, one at a time, whisking to fully incorporate, then add the vanilla and mix again
10. Combine the wet and dry ingredients and fold together until homogenous
11. Combine the 1/4 cup sugar and 2 tsp cinnamon in a very small bowl. Mix together completely
12. Roll the dough into 1/8 cup-sized balls and then roll in the cinnamon-sugar mixture
13. Line baking sheet with parchment paper and transfer the balls one by one
14. Bake for 10-12 minutes
15. Transfer onto cooling rack