These Butterscotch Cookies have just enough toffee, are super fudgy and chewy all while maintaining their golden edges. Ready in just a few minutes and can be frozen for later!
In a large mixing bowl, beat together the butter, granulated sugar, and brown sugar until light and fluffy (about 2 minutes on medium speed). Add vanilla extract and eggs and continue beating on high speed for about 5 minutes longer, occasionally scraping down the sides of the mixing bowl. Your dough should be noticeably lighter in color and very fluffy.
In a medium bowl, mix together the flour, baking soda, cream of tartar, and salt.
Add the flour mixture to the butter/sugar mixture by the spoonful, mixing on low speed, and incorporating each flour addition until all has been combined.
Beat in the butterscotch chips and the toffee pieces, just until combined
Preheat the oven to 350 degrees and line baking sheets with parchment paper or spray with nonstick baking spray.
Use a cookie scoop to form balls from the dough and space 2” apart on a greased cookie sheet.
Bake for 9-10 minutes, until the cookies are spread evenly across the top and are lightly golden brown around the bottom edges.
Transfer cookies to a cooling rack and allow to cool.