Put butter in a large pot. Heat over medium heat. 1 cup unsalted butter
Allow the butter to continue cooking, stirring often as it melts, then bubbles and foams. Scrape the sides and watch for it to get a nutty smell, and start to turn to an amber color. Remove from heat.
Pour butter into a separate bowl and allow to sit for about 30 minutes.
Cream together the butter (still melted) sugar, and brown sugar for 2-3 minutes until it starts to get smooth. 1 cup granulated sugar, 1/2 cup brown sugar
Add in the eggs and vanilla extract and stir until just combined. 2 large eggs, 1/2 TBS vanilla extract
Add in the flour, cream of tartar, baking soda, and salt. Stir until combined. 3 cups all purpose flour, 2 tsp cream of tartar , 1 tsp baking soda , 1 tsp baking soda
Cover the dough and place it in the fridge while the oven preheats
Preheat the oven to 350 degrees Fahrenheit. Line two cookie sheets with parchment paper, or silicone liners, and set it aside.
Scoop the dough by 1.5 to 2 TBS portions and roll them into balls.