Preheat oven to 375°F
Mix together flour, salt, and baking soda. Set aside.
In a stand mixer with the whisk attachment, whip the butter until creamy (make sure it is room temperature first).
Add both sugars. Continue to beat until creamy. Add vanilla extract and toffee oil.
Replace whisk attachment with the paddle attachment. On low, mix in the flour mixture a little at a time.
Remove from stand mixer. Pour in chocolate chips, heath bar chunks, and pecans. Mix by hand.
Get a spoonful, about a heaping tablespoon, and roll it into a ball. Place on parchment paper lined baking sheet.
Bake for 9-10 minutes. After 9 minutes, remove from the oven. Cookies will be pretty soft. Let them sit on the baking sheet for about 2 minutes. Transfer the cookies to a cooling rack. When they are cool, enjoy!