Preheat oven to 350℉. Line baking sheets with parchment paper.
Cream together butter and sugars until light and fluffy
Add egg, and beat until thoroughly mixed
Sift together flour, soda, and salt. Add to sugar and butter mixture, and stir until thoroughly incorporated.
Add chocolate chips and ¾ cup toffee bits. Stir just until well mixed.
Use a ¼ cup measure to drop dough in even, ¼ cup portions onto cookie sheets. Don't flatten, and do allow space for each cookie to spread. It works well to bake five cookies each, on three baking sheets.
Bake 13 minutes, or until centers are nearly set, and edges are just golden brown.
Remove from oven, and immediately sprinkle each cookie with 2 teaspoon of reserved toffee bits.
Allow to fully cool before packaging. 5" x 7" cellophane cookie bags work perfectly for these.