01 -
Bring butter and eggs to room temperature by letting them sit out for about 30 minutes to ensure smooth mixing.
02 -
Beat the softened butter with light brown sugar and granulated sugar on medium speed for 3 minutes until fluffy and lighter in color.
03 -
Add eggs one at a time, mixing thoroughly after each addition, then blend in the vanilla extract until fully combined.
04 -
Whisk together the all-purpose flour, baking soda, and fine salt in a separate bowl to evenly distribute the leavening agents.
05 -
Gradually add the dry mixture to the wet ingredients using the lowest mixer speed; mix just until combined to maintain tenderness.
06 -
Fold in the crushed Butterfinger pieces, caramel bits, and chopped peanuts gently with a spatula until evenly dispersed without overmixing.
07 -
Scoop generous tablespoon-sized portions of dough and place them 2 inches apart on a parchment-lined baking sheet.
08 -
Lightly sprinkle sea salt flakes atop each dough mound immediately before baking to enhance flavor contrast.
09 -
Bake at 350°F (177°C) for 10 to 12 minutes until edges are golden and centers remain soft.
10 -
Allow cookies to cool on the baking sheet for at least 5 minutes to firm up before transferring to a wire rack.