Place the butter in a medium saucepan over medium-high heat. The butter will melt and
start to foam then orangey-brown bits will form on the bottom of the pan. This process
should take about 5 minutes.
Transfer the brown butter to a small bowl and chill until the butter has firmed up, but is
still soft.
In a large bowl using a hand mixer or a stand mixer beat the brown butter and the sugar
until well combined.
Add the eggs one at a time, mixing well after each addition. Add the vanilla and combine again.
In a medium bowl combine the flour, baking soda, baking powder, and salt. Whisk until
well combined and free of lumps.
Mix the dry ingredients into the butter mixture until just combined. Chill the dough for at least 30 minutes.
Preheat your oven to 350° F. Line a baking sheet with parchment paper. Scoop about 1 1⁄2-2 tablespoons of cookie dough and roll into a ball. Place the dough
balls on the prepared baking sheet at least 2 inches apart. Press the dough balls down
slightly to flatten.
Bake for 10-12 minutes, rotating the pan halfway through baking.Remove the cookie from the oven and allow them to cool completely on the cookie
sheet.