2 cups toffee pieces (home-made butter toffee or store-bought bits)
Preheat oven to 350 degrees F.
Sift together flour and baking soda. Cream together butter, sugar, and vanilla. Add eggs one at a time. Add toffee pieces to mixture. Mix creamed mixture and dry mixture together. Use rounded tablespoon to measure dough. Place dough at least 2 inches apart on baking sheet. Bake for 10 to 12 minutes.