1½ c. pecan halves1 c. unsalted butter melted and cooled until no longer warm1¼ c. dark brown sugar tightly packed½ c. granulated sugar1 large egg + 1 egg yolk, room temperature1½ t. vanilla extract3 c. all purpose flour1 t. cornstarch¾ t. baking soda½ t. baking powder¾ t. salt½ c. Heath Toffee bits, optional
- Preheat oven to 350°F and line a cookie sheet with parchment paper.
- Spread pecan halves evenly over cookie sheet and bake on 350°F (175°C) for 3-5 minutes.
- Remove from oven (do not turn off your oven) and set aside while you prepare your cookie dough.
- In a large bowl, combine melted butter and sugars. Stir well.
- Add egg, egg yolk, and vanilla extract and stir until well-combined.
- In a separate, medium-sized bowl, whisk together flour, cornstarch, baking soda, baking powder, and salt.
- Gradually add flour mixture to wet ingredients until completely combined.
- Coarsely chop your pecans then stir in the pecans and toffee bits until combined.
- Line cookie sheets with parchment paper and drop cookie dough by heaping 1½ Tablespoon onto prepared cookie sheet, spacing at least 2" apart.
- Transfer to 350°F oven and bake for 10-12 minutes. Cookies should still look soft/slightly under-done in the centers.
- Allow cookies to cool completely on baking sheet and they will finish baking through as they cool.