In a medium frying pan over medium heat, melt the butter. Heat the butter until the milk deposits separate and turn amber in color. Remove from heat and cool completely.
1 cup Plus 2 Tablespoons Unsalted butter
In a medium bowl, mix the flour, baking powder, baking soda, and salt. Set aside.
2 ½ cup All-purpose flour, ½ teaspoon Baking soda, ½ teaspoon Baking powder, 1 teaspoon Salt
In a large bowl, mix the brown butter, brown sugar, sugar, vanilla extract, and eggs. Use a whisk to mix until smooth.
1 ¼ cups Brown sugar, ¼ cup White granulated sugar, 2 Large eggs, 1 teaspoon Pure vanilla extract
Add in the dry ingredients and use a rubber spatula to mix until just combined. Add the chocolate chips and toffee pieces.
1 cup Semi-sweet chocolate chips, 1 cup Toffee bits
Preheat oven to 350F. Line 2 cookie sheets with parchment paper. Let the dough rest for 10 minutes while the oven preheats.
Scoop the cookie dough using a large cookie scoop. Place 6 dough balls per cookie sheet.
Bake for 13-15 minutes. Cookies are done when they are golden brown. Let sit for 4 minutes on cookie sheet before transferring to cooling rack.