01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together gluten-free flour, baking soda, sea salt, and espresso powder until well blended.
03 - In a large mixing bowl, beat softened butter, granulated sugar, and brown sugar until light and fluffy, approximately 2-3 minutes.
04 - Add eggs one at a time, beating thoroughly after each addition. Mix in vanilla extract until fully incorporated.
05 - Gradually stir dry ingredients into wet mixture, mixing until just combined. Avoid overmixing to prevent tough cookies.
06 - Gently fold chocolate chips and toffee bits into dough until evenly distributed throughout.
07 - Scoop tablespoon-sized portions of dough onto prepared baking sheets, leaving 2 inches of space between each cookie.
08 - Bake for 10-12 minutes until edges are lightly golden and centers appear set.
09 - Allow cookies to rest on baking sheets for 5 minutes, then transfer to wire rack to cool completely.