Start by preheating your oven to 350°F (175°C). Line your baking sheets with parchment paper to ensure your cookies come off easily after baking.
In a large mixing bowl, cream together the cubed unsalted butter, sugar, and brown sugar using a stand mixer or hand mixer until light and fluffy. This should take about 2-3 minutes.
Next, add the chopped hard-boiled eggs and vanilla extract to the butter mixture. Mix until well combined. The texture may look a bit different than traditional cookie dough, but that’s okay!
In a separate bowl, whisk together the all-purpose flour, salt, and baking soda. Gradually add this mixture to the wet ingredients, mixing on low speed until just combined. Be careful not to overmix.
Gently fold in the semi-sweet chocolate chips and toffee bits using a spatula or wooden spoon. Make sure they are evenly distributed throughout the dough.
Using a cookie scoop or tablespoon, drop rounded balls of dough onto the prepared baking sheets, spacing them about 2 inches apart. Bake in the preheated oven for 10-12 minutes or until the edges are golden brown.
Once baked, remove the cookies from the oven and let them cool on the baking sheets for 5 minutes before transferring them to a cooling rack. Allow them to cool completely before indulging in these Amazing Hard Boiled Egg Chocolate Chip Cookies.