For a crowd-pleasing Christmas treat, look no further than these chewy chocolate toffee cookie bars. Studded with red and green M&M's, these holiday bar cookies are a cute, festive treat.

Full Heath bars or other buttery toffee bars or candies with or without chocolate can be chopped up and added to these cookies. Also adding toffee-coated nuts like peanuts, pecans or cashews can ...

Beat until just combined. Fold in toffee bits. Scoop 1-2 teaspoons of dough and roll into a ball. Roll dough ball in remaining sugar and place on prepared cookie sheet. Repeat with remaining dough.